National Interest Waivers fall in the employment-based immigration second preference EB-2 category. Under normal conditions, labor certification is required in EB-2 visa cases, in which the U.S. employer must show that there are no qualified U.S. employees to fill the position offered. In the case of a National Interest Waiver, the labor certification process is waived, if it is in the best interest of the United States. The Mississippi State Department of Health can issue a support letter for a National Interest Waiver (NIW) if the agency deems the proposed employment to be in the public’s interest. Interested physicians should see the NIW guidelines below.