EB-1, EB-2 & EB-3 Green Card Options for Professors & Researchers (Ⅴ)
Labor certification and waiver
EB-2 petitions must generally be accompanied by an approved, individual labor certification from the Department of Labor. The labor certification must outline the minimum requirements for the position and is proof that there are no minimally qualified
If you are a worker with an advanced degree or you meet the exceptional ability requirements you may apply to waive the requirement that you have a job offer if such a waiver would be in the national interest. The USCIS established a three part test for the national waiver. You must show that:
1. the person seeks employment in an area of substantial intrinsic merit;
2. the benefit will be national in scope; and
3. the national interest would be adversely affected if a labor certification were required
Source:Visapro