Passim AI gives ChatGPT access to a U.S. immigration-law research database. Search case law, statutes and regulations, agency policy, and unpublished BIA and AAO decisions; retrieve source text; and inspect ImmCite citation-treatment data. Additional tools cover criminal-code provisions, visa bulletins, EOIR statistics, and corpus coverage. Results include available source links and research limitations. Access requires a Passim AI account authorized to use the service. Passim AI provides research materials, not legal advice or a guarantee of an authority's validity; users must verify primary sources.