; (B) by striking subsections (g) and (h); and (C) by redesignating subsection (i) as subsection (g). (11) By redesignating section 429 ( 6 U.S.C. 237 ) as section 427. (12) By striking section 430 ( 6 U.S.C. 238 ). (13) By striking section 431 ( 6 U.S.C. 239 ). (14) By redesignating section 432 ( 6 U.S.C. 240 ) as section 428. (15) By redesignating section 433 ( 6 U.S.C. 241 ) as section 429. (16) By amending the subtitle D heading to read as follows: U.S. Immigration and Customs Enforcement . (17) By striking section 441 ( 6 U.S.C. 251 ). (18) By redesignating section 442 ( 6 U.S.C. 252 ) as section 441. (19) In section 441, as so redesignated— (A) in the section heading, by striking Bureau of Border Security and inserting U.S. Immigration and Customs Enforcement ; (B) by striking the Bureau of Border Security each place it appears and inserting U.S. Immigration and Customs Enforcement ; (C) by striking Under Secretary for Border and Transportation Security each place it appears and inserting Secretary ; (D) by striking Assistant Secretary each place it appears and inserting Director ; (E) by striking the Bureau of Citizenship and Immigration Services both places it appears and inserting United States Citizenship and Immigration Services ; (F) in subsection (a)— (i) in the subsection heading, by striking of Bureau ; (ii) in paragraph (1) by striking a bureau to be known as the Bureau of Border Security and inserting U.S. Immigration and Customs Enforcement ; and (iii) by amending paragraph (5) to read as follows: (5) Managerial rotation program The Director of U.S. Immigration and Customs Enforcement shall implement a managerial rotation program under which employees of U.S. Immigration and Customs Enforcement holding positions involving supervisory or managerial responsibility and classified, in accordance with chapter 51 of title 5, United States Code, as a GS–14 or above, shall— (A) gain experience in all the major functions performed by U.S. Immigration and Customs Enforcement