Authorities Cited: United States Code 42 U.S.C. § 405(g) 42 U.S.C. § 423(a) 42 U.S.C. § 423(d)(2)(C) 42 U.S.C. § 1383 Code of Federal Regulations 20 C.F.R. § 404.1512(a) 20 C.F.R. § 404.1512(d) 20 C.F.R. § 404.1535(b)(1) 20 C.F.R. § 404.920 20 C.F.R. § 416.920 Supreme Court 482 U.S. 137, 146 525 U.S. 1124 529 U.S. 1089, 1120 Circuit Courts 724 F.2d 914, 918 834 F.2d 635, 640 936 F.2d 1143, 1145 143 F.3d 1240 150 F.3d 1320, 1322 190 F.3d 1224, 1228 192 F.3d 492 204 F.3d 847