; and (2) in paragraph (3), by inserting after subsections (a)(5)(A), (n)(1)(A)(i)(II), and (t)(1)(A)(i)(II) the following: of this section and section 218A(k)(2)(B)(ii) . 2110. Effective dates; sunset; regulations (a) Effective dates; regulations (1) In general Sections 2102 and 2104 through 2106 of this title, subsections (a) and (c) through (f) of section 2103 of this title, and the amendments made by the sections, shall take effect on the date on which the Secretary issues the rules under paragraph (3), and the Secretary of Homeland Security shall accept petitions pursuant to section 218A of the Immigration and Nationality Act, as inserted by this Act, beginning no later than that date. Sections 2107 and 2109 of this title shall take effect on the date of the enactment of this Act. (2) At-will employment Section 2103(b) of this title and the amendments made by that subsection shall take effect when— (A) it becomes unlawful for all persons or other entities to hire, or to recruit or refer for a fee, for employment in the United States an individual (as provided in section 274A(a)(1) of the Immigration and Nationality Act ( 8 U.S.C. 1324a(a)(1) )) without participating in the E-Verify Program described in section 403(a) of the Illegal Immigration Reform and Immigrant Responsibility Act of 1996 ( 8 U.S.C. 1324a note) or an employment eligibility verification system patterned on such program’s verification system