Christensen v. State of Iowa , 417 F. Supp. 423 ( 1976 )
Usery v. Dallas Independent School District , 421 F. Supp. 111 ( 1976 )
Katzenbach v. Morgan , 86 S. Ct. 1717 ( 1966 )
Marchetti v. United States , 88 S. Ct. 697 ( 1968 )