USCIS has announced major changes to employment based non immigrant and immigrant visa programs for E-1, E-2, E-3, H-1B, H-1B1, L-1, O-1 or TN classification workers, aimed at improving the ability of U.S. employers to hire and retain high-skilled workers who are beneficiaries of approved employment-based immigrant visa petitions and are waiting to become lawful permanent residents, while increasing the ability of those workers to seek promotions, change employers, or pursue