; and (E) on the date that is 1 year after the date of the enactment of this Act for any new employer. (2) Recruiting and referring Except as provided in paragraph (3), the requirement under subsection (b) shall apply to a person or other entity recruiting or referring an individual for employment in the United States beginning on the date that is 1 year after the date of the enactment of this Act. (3) Agricultural labor or services Notwithstanding paragraph (1), the requirement under subsection (b) shall not apply to the verification of employment eligibility for employees performing agricultural labor or services until on or after the date that is 18 months after the date of the enactment of this Act. (4) Critical infrastructure The Secretary of Homeland Security shall authorize and direct any person or entity responsible for granting access to, protecting, securing, operating, administering, or regulating part of the critical infrastructure (as defined in section 1016(e) of the Critical Infrastructure Protection Act of 2001 ( 42 U.S.C. 5195c(e) )) to use E-Verify whenever hiring an individual for employment in the United States on or after the date that is 6 months after the date of the enactment of this Act. (5) Use of contract labor Any employer who uses a contract, subcontract, or exchange to obtain the labor of an individual in the United States after the applicable effective date under paragraphs (1) through (4) shall certify, in such contract, subcontract, or exchange, that the employer, and all parties to such contract, subcontract, or exchange, use E-Verify. (6) Transition rule Any person or other entity hiring, recruiting, or referring an individual for employment in the United States before the applicable effective date under paragraphs (1) through (4) shall be subject to any other provision of Federal law requiring the person or entity to participate in the E-Verify Pilot Program described in section 403(a) of the Illegal Immigration Reform and Immigrant Responsibility Act of 1996 ( 8 U.S.C. 1324a