EB-1: Extraordinary Ability, 1st Preference
Aliens of extraordinary ability, Professors and Researchers, Int’l Executives and Managers, Top Professional People. (No Labor Certification).

EB-2: Exceptional Ability, 1st Preference
Aliens with Advanced Degrees or Exceptional Ability in Sciences, Arts or Business. (Labor Certification required unless qualifying for a National Interest Waiver (NIW)).

EB-3: Skilled/Professional Workers, 3rd Preference
Skilled or Professional Persons. (Labor Certification Required).

EB-4: Religious Workers, 4th Preference
For certain religious workers, international organization and U.S. government employees.

J/NIW: Shortage of Medical Professionals
Specialty Visas For Physicians, Nurses and Physical Therapists. (Special Process).

*Labor Certification Process
The most common way in which professional aliens attain their green card. The employer must demonstrate, pursuant to the regulations, that no qualified U.S. worker is willing or able to accept the position.