Can my boyfriend immigrate to the U.S. if we get married?

If you and your boyfriend marry, you would be able to petition for him to receive an immigrant visa. His brain damage would not prevent him from immigrating unless he poses a danger to himself or others. He is not required to work in the United States. However, he will need to show he will not become a public charge as part of the immigration process. This is accomplished by you (and a joint sponsor depending upon your income) filing an affidavit of support. You can read more about family immigration at http://myattorneyusa.com/family-immigration.