EB-2: the advanced-degree green card through an employer (PERM)
The EB-2 through PERM is how most employer-sponsored professionals get a green card. The employer first obtains a labor certification from the Department of Labor by recruiting for the job and showing no able, willing, qualified US worker applied; then it files the I-140 for a worker who holds an advanced degree or a bachelor's with 5 years of progressive experience, or has exceptional ability. The employer must pay the prevailing wage. For most countries the wait is short; for India and China the EB-2 queue is the longest in the system, measured in years.
Education, not legal advice.
Talk to an attorney who does EB-2 work