An Affidavit of Support, also called the Form I-864, is a document an individual signs to accept financial responsibility for the applicant who is coming to live in the United States and required to submit by the sponsor and joint sponsor for family based immigrants. U.S. Citizen or Lawful Permanent Resident age 18 or older must meet the income criteria as per the Federal Poverty Guidelines.
An Affidavit of Support for Non immigrant visas also called Form I-134, is a document an individual signs to accept financial support for family or friends while they are in U.S.