; (2) the interaction of such System with the process to admit nonimmigrant workers pursuant to section 218 or 218A of the Immigration and Nationality Act ( 8 U.S.C. 1188 et seq.) and with enforcement of the immigration laws; and (3) the collaborative use of processes of other Federal and State agencies that intersect with the agriculture industry. (c) Report on impact of the System on employers Not later than 18 months after the date of the enactment of this Act, the Secretary of Homeland Security shall submit to Congress a report that assesses— (1) the implementation of the Employment Verification System established under section 274A(d) of the Immigration and Nationality Act, as amended by subsection (a), by employers; (2) any adverse impact on the revenues, business processes, or profitability of employers required to use such System; and (3) the economic impact of such System on small businesses. (d) Government Accountability Office study of the effects of document requirements on employment authorized persons and employers (1) Study The Comptroller General of the United States shall carry out a study of— (A) the effects of the documentary requirements of section 274A of the Immigration and Nationality Act, as amended by subsection (a), on employers, naturalized United States citizens, nationals of the United States, and individuals with employment authorized status