I am on SSI, I want to marry my immigrant girlfriend, is this an issue?

If you’re a U.S. citizen and your immigrant girlfriend entered the United States with permission, you can sponsor her for a green card after you get married. You’ll still need to file an Affidavit of Support, even if your income is below the required level. Because your income doesn’t meet the USCIS poverty guidelines, you’ll need to add a joint financial sponsor who does meet the minimum income requirement.