Authorities Cited: United States Code 38 U.S.C. § 7292(a) Supreme Court 141 U.S. 240, 244 309 U.S. 323, 325 324 U.S. 229, 236 412 U.S. 645, 652 431 U.S. 651, 660 435 U.S. 850, 853 437 U.S. 463, 468 457 U.S. 731, 742 458 U.S. 263, 265 465 U.S. 259, 265 472 U.S. 511, 530 486 U.S. 517, 527 490 U.S. 495, 500 506 U.S. 139, 144 540 U.S. 443, 452 546 U.S. 345, 350-353 Circuit Courts 111 F.2d 129, 131 216 F.2d 832, 833 605 F.2d 1211, 1213 645 F.2d 681, 683 818 F.2d 879, 887 916 F.2d 727, 729 935 F.2d 1090, 1096 947 F.2d 1032, 1034 84 F.3d 1432, 1436 165 F.3d 43, 47 169 F.3d 763, 767 275 F.3d 1361, 1363 359 F.3d 624, 625 437 F.3d 1235, 1239 483 F.3d 824, 827-828 509 F.3d 531, 536