; and (B) work in at least one field office and one service center of United States Citizenship and Immigration Services. ; and (E) in subsection (c)(2), in the matter preceding subparagraph (A), by striking Bureau of Citizenship and Immigration Services each place it appears and inserting United States Citizenship and Immigration Services . (26) In section 452 ( 6 U.S.C. 272 )— (A) by striking the Bureau of each place it appears and inserting United States ; and (B) in subsection (f), in the subsection heading, by striking Bureau of and inserting United States . (27) In section 453 ( 6 U.S.C. 273 )— (A) by striking the Bureau of each place it appears and inserting United States ; and (B) in subsection (a)(2), by striking such bureau and inserting United States Citizenship and Immigration Services . (28) In section 454 ( 6 U.S.C. 274 )— (A) by striking the Bureau of each place it appears and inserting United States ; and (B) by striking pursuant to policies and procedures applicable to employees of the Federal Bureau of Investigation, . (29) By striking section 455 ( 6 U.S.C. 271 note). (30) By striking section 456 ( 6 U.S.C. 275 ). (31) By striking section 459 ( 6 U.S.C. 276 ). (32) By striking section 460 ( 6 U.S.C. 277 ). (33) By striking section 461 ( 6 U.S.C. 278 ). (34) By redesignating section 462 ( 6 U.S.C. 279 ) as section 455. (35) In section 455, as so redesignated, in subsection (b)(2)(A), in the matter preceding clause (i)— (A) by striking the Bureau of Citizenship and Immigration Services and inserting United States Citizenship and Immigration Services ; and (B) by striking Assistant Secretary of the Bureau of Border Security and inserting Director of U.S. Immigration and Customs Enforcement . (36) In section 471 ( 6 U.S.C. 291 )— (A) by striking the section heading and inserting Reorganization and prohibition ; (B) by striking subsection (a); (C) by striking (b) Prohibition .—