USCIS Links
Main Website: U.S. Citizenship and Immigration Services
Form-Specific Links:
I-600: Petition to Classify Orphan as an Immediate Relative (USCIS Page)
I-600A: Application for Advance Processing of an Orphan Petition (USCIS Page)
I-800: Petition to Classify Convention Adoptee as an Immediate Relative (USCIS Page)
I-864: Affidavit of Support Under Section 213A of the INA (USCIS Page)