authority: 5 U.S.C. 301; 6 U.S.C. 521; 8 U.S.C. 1101,1103,1154,1155,1158,1182,1226,1229,1229a,1229b,1229c,1231,1254a,1255,1324d,1330,1361,1362; 28 U.S.C. 509,510,1746; sec. 2 Reorg. Plan No. 2 of 1950; 3 CFR, 1949-1953 Comp., p. 1002; section 203 of Pub. L. 105-100, 111 Stat. 2196-200; sections 1506 and 1510 of Pub. L. 106-386, 114 Stat. 1527-29, 1531-32; section 1505 of Pub. L. 106-554, 114 Stat. 2763A-326 to -328