An immigrant is a foreign national who has been authorized to live and work permanently in the United States. If you want to become an immigrant based on the fact that you have a permanent employment opportunity in the United States, or if you are an employer that wants to sponsor someone for lawful permanent residency based on permanent employment in the United States, you must go through a multi-step process.
Eligibility There are four categories for granting permanent residence to foreign nationals based upon employment:
EB-1 Priority workers
EB-2 Professionals with advanced degrees or persons with exceptional ability
EB-3 Skilled or professional workers
EB-4 Special Immigrants