Wanda Jean Spiker And James Lee Spiker, Vs. Sherry Lynn Spiker And Kelly Keith Spiker ( 2006 )


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  • IN THE SUPREME COURT OF IOWA
    No. 147 / 04-1182
    Filed January 20, 2006
    WANDA JEAN SPIKER and
    JAMES LEE SPIKER,
    Appellants,
    vs.
    SHERRY LYNN SPIKER and
    KELLY KEITH SPIKER,
    Appellees.
    ________________________________________________________________________
    Appeal from the Iowa District Court for  Clay  County,  Frank  Nelson,
    Judge.
    Grandparents appeal from district court judgment vacating  grandparent
    visitation order pursuant to mother’s petition.  AFFIRMED AND REMANDED.
    Scot  L.  Bauermeister  of  Fitzgibbons  Law  Firm,  Estherville,  for
    appellants.
    Michael  J.  Houchins  of  Zenor,  Houchins  &  Borth,  Spencer,  for
    appellees.
    CADY, Justice.
    The issue in this case is whether a  custodial  parent  can  modify  a
    grandparent visitation order on the ground that the applicable provision  of
    the grandparent visitation statute, upon which  the  order  was  based,  was
    subsequently found unconstitutional.   The  district  court  determined  the
    visitation  order  was  subject  to  modification,  and  it  terminated  the
    visitation.  We agree and affirm the judgment of the district court.
    I.    Background Facts and Proceedings
    Jim and Wanda Spiker are the grandparents of Paige and  James  Spiker.
    Paige and James are the children of Kelly Spiker,  Wanda  and  James’s  son,
    and Sherry Spiker.  Sherry and Kelly  were  divorced  on  August  16,  1999.
    Sherry was designated the primary physical caretaker of  the  children,  and
    Kelly was allowed visitation.
    On February 5, 2001, Wanda and Jim filed a  petition  for  grandparent
    visitation under Iowa Code section 598.35 (2001).  They filed  the  petition
    after Kelly stopped visiting  the  children  in  January  2000,  and  Sherry
    stopped allowing the children to visit them.  On August 21,  in  the  course
    of the litigation,  Wanda,  Jim,  and  Sherry  entered  into  a  stipulation
    agreement providing that Wanda and Jim would be allowed visitation with  the
    children and that they would provide transportation of the children  to  and
    from visits.  However, they could not agree as to the length or time of  the
    visitation, so they left that issue for the court to  decide.   Following  a
    hearing, the court granted Wanda and Jim visitation  with  the  children  on
    the first weekend of every month beginning September 2001.  Sherry  did  not
    appeal.
    Visitation occurred as ordered for almost a  year  when  Sherry  began
    withholding Paige from visits.  By 2004, Sherry refused to allow  Wanda  and
    Jim to visit either Paige or James.
    On February 19, 2004, Wanda and  Jim  initiated  contempt  proceedings
    against Sherry for refusing to allow  visitation  with  the  children.   The
    court entered an order for Sherry to show cause why she should not  be  held
    in contempt.  Sherry responded that her  refusal  to  allow  visitation  was
    “due to good cause for the children’s best  interest.”   She  also  asserted
    that the  grandparent  visitation  statute  was  unconstitutional  and  that
    enforcement of the visitation order would violate her due process rights.
    The court held a hearing on the issue of Sherry’s  contempt  on  March
    22, 2004.  It issued an order on March 25  finding  Sherry  in  contempt  of
    court.   The  court  reasoned  that  Sherry  should  have   challenged   the
    constitutionality of the visitation order at  or  before  trial,  not  as  a
    defense in contempt proceedings.  See Walker  v.  City  of  Birmingham,  
    388 U.S. 307
    , 317-21,  87  S.  Ct.  1824,  1830-32,  18  L. Ed. 2d  1210,  1217-
    20 (1967) (holding the way to challenge an  unconstitutional  ordinance  and
    injunction issued under it was to  apply  to  have  injunction  modified  or
    dissolved, not to violate the injunction and assert its  unconstitutionality
    as a defense in contempt proceedings; stating “respect for judicial  process
    is a small price to pay for the civilizing hand  of  law,  which  alone  can
    give abiding meaning to constitutional  freedom”).   Instead  of  sentencing
    Sherry to jail time for  contempt,  the  court  awarded  Wanda  and  Jim  an
    additional seven days of visitation with the children  in  June  2004.   See
    Iowa Code § 598.23(2)(b) (“The court may, as an  alternative  to  punishment
    for contempt, make an order which . . . [m]odifies visitation to  compensate
    for lost visitation time . . . .”).
    Sherry filed a motion to enlarge or amend under rule  1.904(2),  again
    arguing that enforcement of the  visitation  order  would  violate  her  due
    process right to raise  her  children  without  undue  interference  by  the
    State.  She contended that the order could not be enforced absent a  finding
    that she was an unfit mother.   She  further  argued  that  the  stipulation
    agreement she entered into with Wanda and Jim was unenforceable and did  not
    validly waive her constitutional  rights.   The  court  denied  the  motion.
    Sherry did not appeal.
    On April 27, 2004, Sherry filed a petition to modify, vacate, or  stay
    the visitation order, again arguing that the  decree  was  unconstitutional.
    After Wanda and Jim filed their answer, Sherry moved for  summary  judgment,
    and Wanda and Jim resisted.  On June 29, 2004, the  court  granted  Sherry’s
    motion for summary judgment and vacated the  visitation  order.   Wanda  and
    Jim appeal.
    II.   Standards of Review
    “[C]hallenges  to  Iowa’s  grandparent   visitation   statute   raise
    ‘questions of substantive due process and liberty interests in  the  context
    of statutory interpretation’ obliging us ‘to  review  the  record  de  novo,
    making our own evaluation of the totality of the  circumstances.’”    In  re
    Marriage of Howard, 
    661 N.W.2d 183
    ,  187 (Iowa  2003)  (quoting  Santi  v.
    Santi,  
    633 N.W.2d 312
    ,  316  (Iowa  2001)).   “Substantive  due   process
    ‘“provides  heightened  protection  against  government  interference   with
    certain fundamental rights and liberty interests.”’”  Sanchez v. State,  
    692 N.W.2d 812
    , 819 (Iowa 2005) (quoting Troxel v. Granville, 
    530 U.S. 57
    ,  65,
    
    120 S. Ct. 2054
    , 2060, 
    147 L. Ed. 2d
     49,  56  (2000)).   We  apply  strict
    scrutiny when a fundamental liberty interest is at  issue.   
    Id. at 819-20
    (citing Reno v. Flores, 
    507 U.S. 292
    ,  302,  113  S.  Ct.  1439,  1447,  123
    L. Ed. 2d 1, 16  (1993)).   We  have  held  that  “the  parental  caretaking
    interest,” or the right to direct  the  upbringing  of  one’s  children,  is
    fundamental.  
    Id. (citing Santi,
     633  N.W.2d  at  317).   Therefore,  state
    action infringing on that interest must be  narrowly  tailored  to  serve  a
    compelling state interest.  
    Id. (citing Santi,
    633 N.W.2d at 318).  We  have
    already held that the provision of the  grandparent  visitation  statute  at
    issue in this case, section 598.35(1), is not narrowly tailored to  serve  a
    compelling state interest and  is  unconstitutional  on  its  face.   In  re
    Marriage of Howard,  
    661 N.W.2d 183
    ,  185,  192  (Iowa  2003).   The  only
    question is whether this holding  allows  Sherry  to  modify  a  grandparent
    visitation order from which she did not appeal.
    III. Discussion
    A.    Res Judicata
    Wanda and Jim first argue that Sherry is barred from  challenging  the
    constitutionality  of  the  visitation  order  under  the  doctrine  of  res
    judicata.[1]  They claim Sherry should have appealed  the  August  21,  2001
    decree  granting   visitation   if   she   wanted   to   challenge   it   as
    unconstitutional.  This argument is supported by several general  principles
    governing res judicata, and was recently adopted  by  the  Arkansas  Supreme
    Court in Hunt v. Perry, 
    138 S.W.3d 656
    (Ark. 2003).
    In  Hunt  v.  Perry,  a  grandmother   sought   visitation   of   her
    grandchildren from their father, her former son-in-law.   
    Hunt, 138 S.W.3d at 657
    .  The father argued  the  Arkansas  Grandparent  Visitation  Act  was
    unconstitutional, relying on the Supreme Court’s Troxel  decision.   
    Id. at 658.
     The district court found the statute was  constitutional  and  granted
    the grandmother visitation.  
    Id. The father
     did  not  appeal  this  order.
    
    Id. A short
    time later, the Arkansas Supreme  Court  held  the  grandparent
    visitation statute was unconstitutional, and the father sought to  terminate
    the grandmother’s visitation.  
    Id. The district
    court held the  father  was
    barred under res judicata from relitigating  the  constitutionality  of  the
    statute.  
    Id. at 659.
     On appeal, the supreme court agreed:
    [T]he fact that he failed to pursue an appeal now  prevents  him  from
    challenging the trial  court’s  previous  order  finding  the  statute
    constitutional.  In sum, because we have a case that involves the same
    parties, the same issue, and has already been decided by  a  court  of
    competent jurisdiction, the doctrine of res judicata is applicable.
    
    Id. at 662;
    see also Ingram v. Knippers, 
    72 P.3d 17
    ,  21-22  (Okla.  2003)
    (holding  mother  could  not  relitigate  constitutionality  of  grandparent
    visitation statute in action to terminate visitation order  when  she  could
    have, but did not, raise the issue in an appeal of the initial order).   But
    see In re T.J.K., 
    62 S.W.3d 830
    , 832 (Tex. Ct. App. 2001) (“If Troxel  truly
    does  make  [the  grandparent  visitation  statute]  unconstitutional,  then
    maintaining an order granting  grandparent  access  would  be  inappropriate
    because it would violate [the parent’s] Fourteenth  Amendment  rights  under
    the United States Constitution.  The order granting  grandparent  visitation
    is subject to modification by the trial court.”).
    In deciding whether to follow this holding, we must determine  whether
    the Hunt decision is consistent with our prior law concerning res  judicata.
    See Handeland v. Brown, 
    216 N.W.2d 574
    ,  577 (Iowa  1974)  (“[W]e  have  no
    obligation to adopt a rule  just  because  it  has  generally  been  adopted
    elsewhere.  Although cases from other states may  be  persuasive  authority,
    they have  no  greater  cogency  than  the  reasoning  by  which  they  were
    decided.”).  We therefore turn to consider that body of law.
    “The  doctrine  of  res  judicata  embraces  the  concepts  of   claim
    preclusion and issue preclusion.”  Colvin v. Story  County  Bd.  of  Review,
    
    653 N.W.2d 345
    , 348 (Iowa 2002) (citing Bennett v. MC  No.  619,  Inc.,  
    586 N.W.2d 512
    , 516 (Iowa 1998)); accord 18 Charles Alan Wright et al.,  Federal
    Practice and Procedure § 4402, at 7  (2d  ed.  2002)  [hereinafter  Wright].
    Wanda and Jim must necessarily  rely  on  claim  preclusion  in  this  case,
    rather than issue preclusion, because issue preclusion  requires  the  issue
    to  have  been  actually  litigated,  and  the  constitutionality   of   the
    grandparent  visitation  statute  was  not  actually  litigated  before  the
    initial visitation order was entered.  See Restatement (Second) Judgments  §
    27, at 250 (1982) (“When an issue of fact or law is actually  litigated  and
    determined  by  a  valid  and  final  judgment,  and  the  determination  is
    essential to the judgment, the determination is conclusive in  a  subsequent
    action between the parties, whether on  the  same  or  a  different  claim.”
    (Emphasis added.)).
    Our law concerning claim preclusion is well established:
    The general rule of claim preclusion provides a valid and  final
    judgment on a claim precludes a second action on  that  claim  or  any
    part of it.  The rule applies not only as to every  matter  which  was
    offered and received to sustain or defeat the  claim  or  demand,  but
    also as to any other admissible matter which could have  been  offered
    for that purpose.  Claim preclusion, as opposed to  issue  preclusion,
    may foreclose litigation of matters that have  never  been  litigated.
    It does not, however, apply unless the party against  whom  preclusion
    is asserted had a “full and fair opportunity” to litigate the claim or
    issue in the first action.  A second claim is likely to be  barred  by
    claim preclusion where the  “acts  complained  of,  and  the  recovery
    demanded are the same or where the same  evidence  will  support  both
    actions.”  A plaintiff is not entitled to a second  day  in  court  by
    alleging a new ground of recovery for the same wrong.
    Arnevik v. Univ. of Minn. Bd. of Regents, 
    642 N.W.2d 315
    ,  319 (Iowa  2002)
    (citations omitted; emphasis added).  Thus, the party seeking to invoke  the
    doctrine of claim  preclusion  must  establish  three  elements:   (1)  “the
    parties in the first and second action were the same;”  (2)  “the  claim  in
    the second suit could have been fully and fairly adjudicated  in  the  prior
    case;” and (3) “there was a final  judgment  on  the  merits  in  the  first
    action.”  Id.; accord 18 Wright § 4405, at 83.
    The first element of claim preclusion  is  beyond  dispute.   Clearly,
    the parties in the first action (Wanda and Jim’s  petition  for  grandparent
    visitation) and in the second action (Sherry’s petition to  modify,  vacate,
    or stay the visitation order) are the same.
    The second element is also fairly straightforward.  Again,  the  issue
    is  whether  Sherry  could  have  attacked  the  constitutionality  of   the
    grandparent visitation statute  in  the  first  action.   See  
    Arnevik, 642 N.W.2d at 319
    (listing second element as  “the  claim  in  the  second  suit
    could have been fully and fairly  adjudicated  in  the  prior  case”).   The
    general rule is  that  “[w]hen  a  valid  and  final  personal  judgment  is
    rendered in favor of the  plaintiff,  .  .  .  the  defendant  cannot  avail
    himself of the defenses he might have interposed, or did interpose,  in  the
    first action,” in a subsequent action.  Restatement (Second) of Judgments  §
    18, at 151-52; see In re Estate of Boyd, 
    634 N.W.2d 630
    , 637-38 (Iowa  2001)
    (when party did not raise defense to claim, final judgment was  issued,  and
    party did not appeal, party could not  collaterally  attack  the  judgment);
    Robbins v. Daniel, 
    226 Iowa 678
    , 690, 
    284 N.W. 793
    , 798 (1939)  (when  party
    did not assert affirmative defense, res judicata barred  raising  the  issue
    in later suit); see also Shin v. Portals Confederation Corp., 
    728 A.2d 615
    ,
    619 (D.C. 1999) (where party could have raised fraudulent  misrepresentation
    as defense  in  first  action,  he  could  not  bring  a  later  action  for
    fraudulent misrepresentation because of res judicata); J.C. v.  Adoption  of
    Minor Child  Named  Herein,  
    797 So. 2d
     209,  212 (Miss.  2001)  (“‘[T]he
    doctrine of res judicata bars litigation in a second  lawsuit  on  the  same
    cause of action “of all grounds for, or  defenses  to,  recovery  that  were
    available to the parties [in the first action], regardless of  whether  they
    were asserted or determined in the  prior  proceeding.”’”  (quoting  Key  v.
    Wise, 
    629 F.2d 1049
    , 1063 (5th Cir.  1980))  (emphasis  added));  Ingersoll-
    Rand Co. v. Valero Energy  Corp.,  
    997 S.W.2d 203
    ,  207 (Tex.  1999)  (res
    judicata bars “claims or defenses that, through diligence, should have  been
    litigated in the prior suit but were not” (emphasis added)).  Sherry  points
    to no reason,  and  we  can  conceive  of  none,  why  she  could  not  have
    challenged the constitutionality of our grandparent visitation statute  when
    Wanda and Jim initially sought visitation under it.   The  constitutionality
    of the statute could have been fairly and fully litigated  in  that  action.
    
    Arnevik, 642 N.W.2d at 319
    .
    The final element of claim preclusion  is  that  “there  was  a  final
    judgment on the merits in the first  action.”   Id.;  see  also  Restatement
    (Second) of Judgments  §  13,  at  132  (“The  rules  of  res  judicata  are
    applicable only when a final judgment is rendered.”).  Whether  the  initial
    visitation order was a “final” judgment is the fighting issue in this  case.
    Sherry contends that res judicata  does  not  apply  to  orders  concerning
    custody and visitation and that the court always has jurisdiction to  modify
    such a decree.
    There  is  no  specific  statutory  authority  for  courts  to  modify
    grandparent visitation decrees.  See Iowa Code § 598.35; 
    id. § 598.41;
     see
    also 
    id. § 600B.31
    (stating courts  in  paternity  actions  have  continuing
    jurisdiction in paternity actions “to determine the  custody  in  accordance
    with  the  best  interests  of  the  child”).   Nevertheless,  the   initial
    grandparent  visitation  order  in  this  case  was  a   judgment   granting
    continuing relief.  See Restatement (Second) of Judgments § 13  cmt.  c,  at
    133 (“A judgment concluding an  action  is  not  deprived  of  finality  for
    purposes of res judicata by reason of the fact  that  it  grants  or  denies
    continuing relief, that is,  requires  the  defendant,  or  holds  that  the
    defendant may not be required, to  perform  acts  over  a  period  of  time.
    Judgments of these types are rendered typically in actions for . .  .  child
    support and custody.”).  When judgments  concerning  continuing  relief  are
    involved and
    a change  of  circumstances  makes  the  judgment  too  burdensome  or
    otherwise inapposite  as  a  regulation  of  ongoing  conduct,  it  is
    ordinarily possible for the party concerned to apply to the  rendering
    court for a modification of the terms of the judgment.
    Restatement (Second) of Judgments § 13 cmt. c, at 133; see also  
    id. § 73,
    at 197 (“Subject to the limitations stated in § 74, a judgment  may  be  set
    aside or modified if:  (1) The judgment was subject to modification  by  its
    own terms or by applicable law, and events have occurred subsequent  to  the
    judgment that warrant modification of the contemplated kind;  or  (2)  There
    has been  such  a  substantial  change  in  the  circumstances  that  giving
    continued effect to the  judgment  is  unjust.”);  cf.  In  re  Marriage  of
    McCurnin, 
    681 N.W.2d 322
    , 329 (Iowa 2004) (stating  divorce  decree  setting
    child support obligation, which parties did not  appeal,  was  res  judicata
    “until a modification changed its provisions” (citing In  re  Bisenius,  
    573 N.W.2d 258
    ,  260  (Iowa  1998)));  Iowa  Code  §  598.21(8)  (requiring   a
    “substantial  change  in  circumstances”  to  modify  orders  under  section
    598.21).[2]  But  see  Restatement  (Second)  of  Judgments  §  74,  at  202
    (“Except with regard to judgments referred to in §§ 65-66  [invalid  default
    judgments] and 69 [lack of  subject  matter  jurisdiction],  relief  from  a
    judgment will be denied  if:   (1)  The  person  seeking  relief  failed  to
    exercise reasonable diligence in  discovering  the  ground  for  relief,  or
    after such discovery was unreasonably dilatory in  seeking  relief;  or  (2)
    The application for relief is barred by lapse of time; or (3)  Granting  the
    relief will inequitably disturb an interest of  reliance  on  the  judgment.
    When such an interest can be adequately protected by  giving  the  applicant
    limited or conditional relief, the relief  will  be  shaped  accordingly.”).
    This  is  consistent  with  our  general  view  that  courts  have  inherent
    authority to modify decrees concerning custody and  visitation  of  children
    based on a substantial change in circumstances.  See Hobson v.  Hobson,  
    248 N.W.2d 137
    , 139-40 (Iowa 1976).
    In order to determine whether an order granting continuing relief  has
    preclusive effect in a later action (i.e., is a  “final  judgment”  for  res
    judicata purposes), we ask “whether  the  issues  in  the  two  actions  are
    materially different because of events which occurred  in  the  interim,  in
    which case preclusion is to be denied.”  Restatement (Second)  of  Judgments
    § 13 cmt. c, at 134.  In other words, the first judgment  does  not  have  a
    preclusive effect  in  the  second  action  if  circumstances  have  changed
    sufficiently to warrant modifying the decree.  Wade v.  Hirschman,  
    903 So. 2d
    928, 933 (Fla. 2005) (“To modify such judgments,  the  trial  court  must
    decide whether there is a ‘factual basis sufficient to show that  conditions
    have become materially altered since the  entry  of  the  previous  decree.’
    The degree of change in the conditions and circumstances since the  date  of
    the  previous  decree  must  be  of  a  substantial  character.”  (Citations
    omitted.)); In re Marriage of 
    McCurnin, 681 N.W.2d at 329
     (“Jennifer  did
    not appeal following the entry of the decree.  The decree was therefore  res
    judicata as to what was  to  be  considered  in  calculating  David’s  child
    support obligation until a modification changed its  provisions.”  (Citation
    omitted.)).  This relaxation of the res judicata standard in  child  custody
    cases is required because our goal in such cases  is  always  to  serve  the
    best interests of  the  child,  which  may  require  court  supervision  and
    modification throughout the child’s minority.  See In re Marriage  of  Ford,
    
    563 N.W.2d 629
    , 631 (Iowa 1997)  (primary  consideration  in  child  custody
    cases is the best interests of  the  children  (citing  In  re  Marriage  of
    Kleist, 
    538 N.W.2d 273
    , 276 (Iowa 1995); In re Guardianship  of  Knell,  
    537 N.W.2d 778
    , 780 (Iowa 1995))); accord  Linder  v.  Linder,  
    72 S.W.3d 841
    ,
    850 (Ark. 2002) (“[C]ustody orders are subject to modification in  order  to
    respond to changed circumstances and the  best  interest  of  the  child.”).
    This standard mirrors the  general  standard  for  modification  of  custody
    provisions of a dissolution decree.  See 
    Hobson, 248 N.W.2d at 139-40
    .
    Ultimately then, the  case  turns  on  whether  Sherry  established  a
    substantial change in circumstances warranting modification of  the  initial
    grandparent visitation order.  In her petition to modify,  the  only  change
    in circumstances Sherry alleged was that we had held some provisions of  the
    grandparent  visitation  statute  unconstitutional  in  recent  years.   See
    Lamberts v. Lillig, 
    670 N.W.2d 129
    , 132 (Iowa 2003) (section 598.35(3));  In
    re Marriage of 
    Howard, 661 N.W.2d at 185
     (section  598.35(1));  
    Santi, 633 N.W.2d at 314
    (section 598.35(7)).  We must  determine  whether  this  is  a
    sufficient change in circumstances.
    We have  held  that  “[t]he  res  judicata  consequences  of  a  final
    unappealed judgment are not altered by the fact that the judgment  may  have
    rested on incorrect legal principles.”  In re 
    Bisenius, 573 N.W.2d at 260
    (citing Gail v. W. Convenience Stores, 
    434 N.W.2d 862
    ,  863  (Iowa  1989);
    Mahaffa v. Mahaffa, 
    230 Iowa 679
    ,  683-84,  
    298 N.W. 916
    ,  919  (1941)).
    However, we have also held that a change in  the  law  occurring  after  the
    original  judgment  constituted  a  substantial  change   in   circumstances
    justifying modification.  See In re Marriage of  Feustel,  
    467 N.W.2d 261
    ,
    265 (Iowa 1991) (holding change in federal tax law under  which  father  was
    no longer allowed to claim children as  dependents  constituted  substantial
    change  in  circumstances).   The  Restatement  also  contains   conflicting
    statements on the issue.  On one hand, it says it would be “a  very  unsound
    policy” to deny preclusion when “a subsequent judicial decision changes  the
    law  that  was  applied  in  reaching  an  earlier  judgment.”   Restatement
    (Second) of Judgments § 73 cmt. c, illus. 4, at 200.  “On the  other  hand,”
    says the Restatement, “when a change of  law  occurs  following  a  judgment
    regulating future conduct, that may  be  a  circumstance  justifying  relief
    from the judgment.”  
    Id. Moreover, the
     general  Restatement  rule  states
    that a change in the law would not prevent the application of res  judicata.
    See Restatement (Second) of Judgments § 18 cmt. b, at 153 (“The  fact  that
    the judgment was based  on  error  does  not  preclude  the  defendant  from
    setting the judgment up as a defense to an action  on  the  original  claim.
    If it was erroneous, the plaintiff might have taken steps  to  have  it  set
    aside or reversed in the  original  proceeding.”).   However,  there  is  an
    exception to the general rule.  Restatement (Second) of Judgments  §  26(1),
    at 233-34.  Claim preclusion does not apply  when  “[t]he  judgment  in  the
    first  action  was  plainly  inconsistent  with  the  fair   and   equitable
    implementation of a statutory or constitutional scheme, or it is  the  sense
    of the scheme that the plaintiff should be allowed  to  split  her  claims.”
    
    Id. § 26(1)(d),
    at 234 & cmt. e, illus. 6, at 240.  That is,
    the general  principal  that  changes  of  law  do  not  defeat  claim
    preclusion may be relaxed when the dispute involves matters of special
    sensitivity.  The easiest illustrations are provided by development of
    constitutional principles in cases that challenge  continuing  conduct
    of broad public importance. . . .  A few cases  reject  preclusion  in
    face of evolving constitutional law  principles  although  the  public
    interest may not seem as vital or the  interests  involved  seem  more
    nearly personal than public.  These decisions are  justified  by  many
    factors.  The rights involved  may  be  of  public  importance  at  an
    abstract level, despite the  lack  of  obvious  immediate  importance.
    Often  the  first  actions  were  eligible  for  preclusion  only   on
    principles of representation;  special  care  is  always  required  to
    ensure that nonparties are properly bound  in  such  cases.   Finally,
    ordinary claim preclusion  rules  are  often  strained  by  continuing
    conduct.
    18 Wright § 4415, at 372-73.
    The United States Supreme Court  has  dealt  with  the  issue  in  the
    context of a statutory change occurring after  the  original  judgment.   In
    System Federation No. 91  v.  Wright,  
    364 U.S. 642
    ,  81  S.  Ct.  368,  5
    L. Ed. 2d 349 (1961), a group of nonunion employees entered into  a  consent
    decree with a railroad and a number of  unions  representing  its  employees
    enjoining the railroad and its unions from discriminating  against  nonunion
    employees (i.e., requiring a “union shop”).  Sys. Fed’n No. 
    91, 364 U.S. at 644
    , 81 S. Ct. at 
    369, 5 L. Ed. 2d at 351
    .   Afterwards,  Congress  amended
    the Railway Labor Act “to permit, under certain  circumstances,  a  contract
    requiring a union shop.”  Id. at 
    644, 81 S. Ct. at 369
    -70, 5 L.  Ed.  2d  at
    352.  The railroad and  the  unions  then  sought  to  modify  the  decree’s
    injunction to reflect this change in the law.  
    Id. at 644,
     81  S.  Ct.  at
    
    370, 5 L. Ed. 2d at 352
    .  In commenting on the res judicata  effect  of  the
    original decree, the Court said:
    There is also no dispute but that a sound judicial discretion may call
    for the modification of the terms  of  an  injunctive  decree  if  the
    circumstances, whether of law or fact, obtaining at the  time  of  its
    issuance have changed, or new ones have since arisen.  The  source  of
    the power to modify is of course the fact  that  an  injunction  often
    requires continuing supervision by the  issuing  court  and  always  a
    continuing willingness to apply its powers and processes on behalf  of
    the party who obtained that equitable relief.  Firmness and  stability
    must no doubt be attributed to continuing injunctive relief  based  on
    adjudicated facts and law, and neither the  plaintiff  nor  the  court
    should be subjected to the unnecessary burden of re-establishing  what
    has once been decided.  Nevertheless the court cannot be  required  to
    disregard significant changes in law or facts if it is “satisfied that
    what it has been doing has been turned through changing  circumstances
    into an instrument of wrong.”  A balance must thus be  struck  between
    the policies of res judicata and the  right  of  the  court  to  apply
    modified measures to changed circumstances.
    
    Id. at 647-48,
    81 S. Ct. at 371, 5 L.  Ed.  2d  at  353  (citation  omitted;
    emphasis added); see also United States v. Swift & Co., 
    286 U.S. 106
    ,  114,
    
    52 S. Ct. 460
    , 462, 76 L.  Ed.  999,  1005-06 (1932)  (“The  distinction  is
    between restraints that give protection to rights fully accrued  upon  facts
    so nearly permanent as to be substantially impervious to change,  and  those
    that involve the supervision of changing conduct or conditions and are  thus
    provisional and tentative.”  (Citation  omitted.)).   The  Court  ultimately
    concluded that the decree could be modified due to the change  in  the  law.
    Sys. Fed’n No. 
    91, 364 U.S. at 652
    , 81 S. Ct. at 373, 5  L. Ed. 2d  at  355.
    The Court explained that “[t]he parties have no  power  to  require  of  the
    court continuing enforcement of rights the statute no longer gives.”  
    Id. This principle
    applies with  equal,  if  not  greater,  force  to  the
    visitation order at issue in this case.  If the visitation order has  turned
    into “an instrument of wrong,” Sys. Fed’n  No.  
    91, 364 U.S. at 647
    ,  81
    S. Ct. at 
    371, 5 L. Ed. 2d at 353
    , a court should have the power  to  modify
    it, particularly because its enforcement is violating  Sherry’s  fundamental
    constitutional right to direct the upbringing of her children,  rather  than
    a mere statutory right.  Likewise, Wanda and Jim “have no power  to  require
    of the court continuing enforcement of rights the  [grandparent  visitation]
    statute no longer gives.”  Id. at 
    652, 81 S. Ct. at 373
    ,  5  L.  Ed.  2d  at
    355.
    In sum, the fact that the statute upon which the visitation order  was
    based  has  been  declared  unconstitutional  is  a  substantial  change  in
    circumstances.  Yet, in the context of child custody  cases,  we  have  also
    required the change to “relate to the  welfare  of  the  children.”   In  re
    Marriage of Frederici,  
    338 N.W.2d 156
    ,  158 (Iowa  1983)  (citing  In  re
    Marriage of Mikelson, 
    299 N.W.2d 670
    , 671 (Iowa 1980)).  The district  court
    did not discuss whether Paige and James’ best interests were  better  served
    by discontinuing the visitation with their grandparents.  However, there  is
    a presumption that parents act in the  best  interests  of  their  children.
    See In re Marriage of 
    Howard, 661 N.W.2d at 188
    (citing 
    Troxel, 350 U.S. at 69-70
    , 120 S. Ct. at 2062, 
    147 L. Ed. 2d
    at 58-59).   Thus,  the  change  in
    circumstances in this case  (the  newly  recognized  unconstitutionality  of
    section 598.35(1)) “relate[s]  to  the  welfare  of  the  children,”  In  re
    Marriage of 
    Frederici, 338 N.W.2d at 158
    ,  because  it  recognizes  Sherry’s
    fitness as a  parent  to  make  decisions  in  the  best  interests  of  her
    children, absent a showing that she is unfit or  would  harm  the  children,
    and it returns this decisionmaking role to her rather than the State.
    Although res judicata is founded on important  policy  considerations,
    those considerations must give way at least when, as  in  this  case,  claim
    preclusion  would  result  in  the  State’s  continuing  violation   of   an
    individual’s fundamental constitutional rights.  As  previously  noted,  the
    Arkansas Supreme Court rejected this conclusion in Hunt  v.  Perry,  holding
    that “a change  in  circumstances  that  prevents  the  application  of  res
    judicata is a change in the circumstances of  the  parties,  not  the  law.”
    
    Hunt, 138 S.W.3d at 662
    .  However, we have already held  that  a  change  in
    the  law  can  constitute  a  change  in  circumstances  for   purposes   of
    modification.  See In re Marriage of 
    Feustel, 467 N.W.2d at 265
     (holding
    change in federal tax law under which father was no longer allowed to  claim
    children as dependents constituted  substantial  change  in  circumstances).
    As the Texas Court of Appeals stated in In re T.J.K.,
    If a statute that authorized a term  or  condition  of  visitation  is
    declared unconstitutional, that change should operate like  any  other
    change in circumstances that potentially makes the order unworkable or
    inappropriate.  There is nothing in the statute that limits the change
    in circumstances to factual changes rather than changes in law.
    In re 
    T.J.K., 62 S.W.3d at 832
    ; cf. Iowa Code § 598.21(8)(k) (listing  as  a
    factor to be considered  in  determining  whether  there  is  a  substantial
    change  in  circumstances  “[o]ther  factors  the  court  determines  to  be
    relevant in an individual case”).  We find the Texas  court’s  reasoning  to
    be more consistent with our law concerning res  judicata  than  the  court’s
    reasoning in Hunt.  Therefore, we conclude the district  court  was  correct
    that res judicata did not bar Sherry’s petition to modify.  The  court  also
    correctly concluded that the unconstitutionality of  section  598.35(1),  as
    pronounced in In  re  Marriage  of  Howard,  was  a  substantial  change  in
    circumstances that justified terminating the grandparent visitation order.
    B. Other Arguments
    Wanda and Jim next argue that even if section  598.35(1),  upon  which
    the visitation order is based, would normally  be  unconstitutional,  it  is
    constitutional as applied in this case  because  Sherry  stipulated  to  the
    visitation.  Wanda and Jim argue  Sherry’s  stipulation  to  visitation  was
    “tantamount to a consent decree.”  In re Marriage  of  
    Ask, 551 N.W.2d at 645
     (citation omitted).
    This argument does not alter our res judicata analysis.  The  judgment
    in System Federation No. 91 was also a consent decree.  Sys. Fed’n  No.  
    91, 364 U.S. at 644
    , 81 S.  Ct.  at  369,  5  L.  Ed.  2d  at  351.   The  Court
    explained:
    “The result is all one whether the decree has been entered after
    litigation or by consent.  In either event, a court does not  abdicate
    its power to revoke or modify its mandate, if satisfied that  what  it
    has been doing has been turned through changing circumstances into  an
    instrument of wrong.  We reject the  argument  for  the  interven[o]rs
    that a decree entered upon consent is to be treated as a contract  and
    not as a judicial act. . . .  But in truth what was then adjudged  was
    not a contract as to [anyone].  The consent is to be read as  directed
    toward events as they then were.  It was not  an  abandonment  of  the
    right to exact revision in  the  future,  if  revision  should  become
    necessary in adaptation to events to be.”
    
    Id. at 650-51,
    81 S. Ct. at 
    373, 5 L. Ed. 2d at 355
    (quoting  Swift  &  
    Co., 286 U.S. at 114-15
    , 52 S. Ct. at 
    462, 76 L. Ed. at 1006
    )).  Thus,  the  fact
    that the visitation order was based on  a  stipulation  does  not  mean  the
    court cannot modify it if circumstances change.  We have said:
    [U]nder our decisions  the  binding  force  of  a  stipulation  as  to
    alimony, child support and custody depends  on  the  approval  of  the
    court.  It is the decree and not the contract  that  becomes  binding.
    The stipulation becomes merged in  the  decree.   And  the  court  may
    disregard the stipulation entirely.
    Brin v. Brin, 
    240 Iowa 659
    ,  664,  
    37 N.W.2d 261
    ,  264 (1949)  (citations
    omitted); see also Holland v. Holland, 
    260 Iowa 248
    , 250,  
    149 N.W.2d 124
    ,
    125 (1967) (“The fact the parties made an agreement for support of  children
    and the court approved it in the original decree does not affect  the  power
    to modify the decree.” (Citations omitted.)); 24A Am. Jur.  2d  Divorce  and
    Separation § 999, at 383-84 (1998) (“The  fact  that  the  parties  made  an
    agreement for the custody  and  support  of  children  and  that  the  court
    approved it in the original decree does not affect the power to  modify  the
    decree.”); cf. 
    id. § 817,
    at 197 (“Where a court has the  general  power  to
    modify a decree for alimony or support, the exercise of that power  normally
    is not affected by the fact the  decree  refers  to,  or  is  based  on,  an
    agreement of the parties.”).
    We also observe that this approach  is  consistent  with  our  general
    approach in Lynch v. Uhlenhopp, 
    248 Iowa 68
    , 83, 
    78 N.W.2d 491
    , 500  (1956),
    where we refused to permit contempt powers of courts to be used  to  enforce
    a stipulated provision of a dissolution decree that required  the  custodial
    parent to raise the child of the parties “in the Roman  Catholic  Religion.”
    Instead, we found that such a provision in a dissolution  decree  interfered
    with  the   constitutional   restrictions   forbidding   interference   with
    individual religious beliefs, and we refused to  permit  the  courts  to  be
    used to affirmatively enforce the provision.  
    Lynch, 248 Iowa at 83
    ,  78
    N.W.2d  at  500.   Accordingly,  we  reject  Wanda  and  Jim’s   contractual
    argument.  We also note that we need not  consider  Sherry’s  argument  that
    she did not “‘voluntar[il]y, knowingly and  intelligently,’”  
    Lamberts, 670 N.W.2d at 135
    (citation omitted), waive her parental caretaking interest  in
    the visitation stipulation with Wanda and Jim.   Even  if  she  had  validly
    waived her interest, the district court was still empowered  to  modify  the
    decree upon a substantial change in circumstances.
    Moreover, we also reject  Wanda  and  Jim’s  constitutional-as-applied
    argument because we have already held section 598.35(1) is  unconstitutional
    on its face.  In re Marriage of 
    Howard, 661 N.W.2d at 192
    .  If a statute  is
    unconstitutional on its face, by definition, it cannot be constitutional  as
    applied because a finding that a statute is  unconstitutional  on  its  face
    means that it cannot be constitutionally applied under any  conceivable  set
    of circumstances.   In  re  Lewis, 
    257 N.W.2d 505
    ,  510 (Iowa  1977)  (“‘A
    statute is not unconstitutional on its face unless  it  is  unconstitutional
    in every conceivable state of facts; it is ordinarily  not  unconstitutional
    as applied unless it is unconstitutional as applied in the specific  factual
    situation before the court.’” (Citation  omitted.));  accord  3  Chester  J.
    Antieau & William J. Rich, Modern Constitutional Law § 50.03, at 711  (1997)
    (stating a holding that a statute is  unconstitutional  on  its  face  is  a
    determination that the legislation is  always  unconstitutional  in  “‘every
    conceivable situation which might possibly arise’”).
    Finally, Wanda and  Jim  argue  that  the  district  court  never  had
    jurisdiction to modify the visitation order because Sherry did not file  her
    petition within the  time  required  by  rule  1.1013,  our  rule  governing
    petitions to vacate or modify final judgments.  This argument fails  because
    Sherry’s failure to comply with our rule governing  modifications  of  final
    judgments does not deprive the court  of  its  common-law  power  to  modify
    judgments granting continuing relief and regulating future  conduct  upon  a
    substantial change in circumstances.  See Restatement (Second) of  Judgments
    § 73, at 197 (“[A] judgment may be set aside or modified if:  . . .  [t]here
    has been  such  a  substantial  change  in  the  circumstances  that  giving
    continued effect to the judgment is unjust.”).
    C.    Sherry’s Request for Appellate Attorney Fees
    The final issue in this  appeal  is  Sherry’s  request  for  appellate
    attorney  fees.   An  award  of  appellate  attorney  fees  is  within   the
    discretion of the appellate court.  In re Marriage of  
    Ask, 551 N.W.2d at 646
    (citing In re Marriage of  Gaer,  
    476 N.W.2d 324
    ,  326  (Iowa  1991)).
    Whether such an award is warranted is determined by considering  “the  needs
    of the party making the request, the ability of the other party to pay,  and
    whether the party making the request  was  obligated  to  defend  the  trial
    court’s decision on appeal.”  
    Id. (citing In
     re  Marriage  of  
    Gaer, 476 N.W.2d at 326
    ).  Because we  do  not  have  any  evidence  of  the  parties’
    respective ability to pay, we remand the  case  to  the  district  court  to
    determine Sherry’s entitlement to fees and  the  amount,  if  any,  thereof.
    See Schaffer v. Frank Moyer Constr., Inc., 
    628 N.W.2d 11
    ,  23  (Iowa  2001)
    (“[U]nder our current practice, the issue  of  appellate  attorney  fees  is
    ‘frequently determined in the first instance in the district  court  because
    of the necessity for making a record.’” (quoting Lehigh  Clay  Prods.,  Ltd.
    v. Iowa Dep’t of Transp., 
    545 N.W.2d 526
    , 530 n.2 (Iowa  1996)));  see  also
    Markey v. Carney, 
    705 N.W.2d 13
    ,  27 (Iowa  2005)  (remanding  to  district
    court to determine appellate attorney fees); GreatAmerica Leasing  Corp.  v.
    Cool Comfort Air Conditioning & Refrigeration, Inc.,  
    691 N.W.2d 730
    ,  734
    (Iowa 2005) (same); In re Marriage of 
    McCurnin, 681 N.W.2d at 333
    (same).
    IV. Conclusion
    Res judicata does not bar Sherry’s petition to modify  or  vacate  the
    visitation  order  because  the  change   in   the   law   recognizing   the
    unconstitutionality  of  section  598.35(1)  is  a  substantial  change   in
    circumstances justifying modification of  the  order.   “[G]iving  continued
    effect to  the  [visitation  order]  is  unjust,”  Restatement  (Second)  of
    Judgments § 73(2), at 197, because it constitutes a continuing violation  of
    Sherry’s constitutional right as a mother to make  decisions  regarding  her
    children’s well-being absent a showing of harm to  them  or  her  unfitness.
    The fact that the order was based on a stipulation of the parties  does  not
    alter this result.  The district court was  therefore  correct  in  vacating
    the visitation order.  We affirm the district court judgment and remand  for
    determination of Sherry’s request for appellate attorney fees.
    AFFIRMED AND REMANDED.
    -----------------------
    [1] Both parties reference the “law of the case”  doctrine,  but  that
    doctrine is inapplicable.  The law of the case doctrine says:
    [A]n appellate decision becomes the law of the case and is controlling
    on both the trial court and on any further appeals in the  same  case.
    Springer v. Weeks & Leo Co., 
    475 N.W.2d 630
    , 632  (Iowa  1991).   Like
    res judicata, the law of the case doctrine  is  founded  on  a  public
    policy against reopening matters which have been  decided.   Wolfe  v.
    Graether, 
    389 N.W.2d 643
    , 651 (Iowa  1986)  (citing  46  Am.  Jur.  2d
    Judgments § 400, at 568 (1969)).  Thus, issues decided by an appellate
    court generally cannot be reheard, reconsidered, or relitigated in the
    trial court.  5 C.J.S. Appeal and Error § 975, at 476-77 (1993).   The
    appellate court decision is final as to all questions decided and  the
    trial court is obligated to follow that decision.  
    Id. United Fire
    & Cas. Co. v. Iowa Dist. Ct., 
    612 N.W.2d 101
    ,  103 (Iowa  2000);
    accord In re Lone Tree Cmty. Sch. Dist., 
    159 N.W.2d 522
    ,  526 (Iowa  1968).
    However, this is the first time  the  Spikers’  case  has  been  before  any
    appellate court, so it is clear the applicable  doctrine  is  res  judicata,
    not law of the case.
    [2]In addition, Iowa Rule  of  Civil  Procedure  1.1012  provides  for
    modification of judgments under certain circumstances listed  in  the  rule.
    See Iowa R. Civ. P. 1.1012 (grounds for modifying  or  vacating).   However,
    petitions for relief under that rule must be filed within one  year  of  the
    entry of the judgment or order involved.  
    Id. r. 1.1013(1).
      Here,  Sherry
    did not file her petition to modify  until  April  27,  2004—two  years  and
    eight months after the visitation  order  was  filed  on  August  21,  2001.
    Therefore, even assuming one of the grounds listed in  rule  1.1012  applied
    to Sherry, she could not modify the judgment under that rule.