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This arXiv paper introduces a pre-registered evaluation measuring cross-jurisdiction substitution in LLM recall of U.S. state Medicaid policy facts, finding that Claude Sonnet 5.5 and GPT-5.6 Sol reproducibly return real values belonging to other states, while showing that naive attribution inflates such errors severalfold unless asked-state reference values are fully checked.
Medicaid officials improperly shared data on millions of people with ICE, who then shared it with the data analytics firm Palantir, according to new court filings in an ongoing lawsuit.