The sponsor is usually the petitioner who filed an immigrant petition on behalf of the intending immigrant. These forms are not a substitute for legal advice.We strongly encourage you to consult an attorney prior to filing any legal documents with our office. Completing and signing Form I-864 makes you the sponsor. OTHER DEFINITIONS AND RECOMMENDATIONS: • FormTo increase the chances that the SEA will include all necessary information, the Court. Affidavits are most useful when the petitioner's evidence of a bona fide marriage is weak and possibly insufficient. Can the immigrant visa applicant count assets that he or she owns that are outside the United States, such as real estate or personal property?