Independent Insurance Agents of Huntsville, Inc. v. Commissioner of Internal Revenue , 998 F.2d 898 ( 1993 )
marvin-b-morganbesser-douglas-bleiler-wayne-gyenizs-james-n-mcparland , 984 F.2d 560 ( 1993 )
Helvering v. Taylor , 55 S. Ct. 287 ( 1935 )
United States v. American College of Physicians , 106 S. Ct. 1591 ( 1986 )
United States v. American Bar Endowment , 106 S. Ct. 2426 ( 1986 )