; (5) details on information sharing mechanisms to ensure that United States Customs and Border Protection has current information to prevent terrorist and criminal travel; and (6) other factors that the Commissioner determines necessary for Congress to comprehensively assess the appropriateness of carrying out the program. (d) Amendment of existing agreements Not later than 30 days before a substantially amended program agreement with the government of a host country in effect as of the date of the enactment of this section enters into force, the Commissioner of U.S. Customs and Border Protection shall provide to the Committee on Homeland Security of the House of Representatives and the Committee on Homeland Security and Governmental Affairs of the Senate— (1) a copy of such agreement, as amended; and (2) the justification for such amendment. (e) Definitions In this section, the terms air carrier and foreign air carrier have the meanings given such terms in section 40102 of title 49, United States Code. . (b) Conforming amendment Subsection (c) of section 411 of the Homeland Security Act of 2002 ( 6 U.S.C. 211 ), as amended by this title, is further amended— (1) in paragraph (22), by striking and after the semicolon at the end; (2) by redesignating paragraph (23) as paragraph (24); and (3) by inserting after paragraph (22) the following new paragraph: (23) carry out section 420B, relating to the immigration advisory program