Employment based Green Cards
There are two ways to obtain a so-called US Green Card (permanent residence). One way is through a family member. The other way is to obtain an employment-based Green Card (you can also try for the annual Green Card diversity lottery).
This section discusses three types of Employment-based Green Cards.
EB-1 These visas are designed for certain multinational executives and managers; outstanding professors and researchers; and those who have extraordinary ability in the sciences, arts, education, business or athletics
EB-2 This category is for foreign nationals professionals with an 'advanced degrees' (masters degree or higher) and with a job offer from a U.S. company; for foreign nationals with 'exceptional ability' in the sciences, business or arts and with a job offer from a U.S. company; and for foreign nationals with exceptional ability, or an advanced degree, who can show that their activities will substantially benefit the U.S. national interest
EB-3 This category is for 'professional workers' with a U.S. bachelor's or foreign equivalent degree and with a job offer from a U.S. company; for 'skilled workers' for positions that require at least two years of training or experience and with a job offer from a U.S. company; for 'unskilled workers' for positions that require less than two years training or experience and with a job offer from a U.S. company