; (3) how States can implement policies to support occupational licensing uniformity and occupational license portability, including streamlined licensing portability programs for veterans and military service members and spouses; and (4) how occupational licensing requirements affect low-income workers, the unemployed, immigrants with work authorizations, and individuals with criminal records. 5. Rule of construction Except as provided in section 3, nothing in this Act shall be construed to modify or impair the applicability or the enforcement of the antitrust laws, as defined in the first section of the Clayton Act ( 15 U.S.C. 12 ).