; and (2) in subparagraph (B), by striking , that conducts hiring in a State and all that follows and inserting shall participate in E-Verify by complying with the terms and conditions set forth in this section. . (b) Federal contractors; critical employers Section 402(e) of such Act, as amended by subsection (a), is further amended— (1) by redesignating paragraphs (2) and (3) as paragraphs (4) and (5), respectively; and (2) by inserting after paragraph (1) the following: (2) United States contractors Any person, employer, or other entity that enters into a contract with the Federal Government shall participate in E-Verify by complying with the terms and conditions set forth in this section. (3) Designation of critical employers Not later than 7 days after the date of the enactment of this paragraph, the Secretary of Homeland Security shall— (A) conduct an assessment of employers that are critical to the homeland security or national security needs of the United States; (B) designate and publish a list of employers and classes of employers that are deemed to be critical pursuant to the assessment conducted under subparagraph (A); and (C) require that critical employers designated pursuant to subparagraph (B) participate in E-Verify by complying with the terms and conditions set forth in this section not later than 30 days after the Secretary makes such designation. . (c) All employers Section 402 of such Act, as amended by this section, is further amended— (1) by redesignating subsection (f) as subsection (g)