What happened
Illinois Governor JB Pritzker announced his intent to sign SB 315 after the bill passed the Illinois House 110-0 on 2026-05-28 (Senate 52-5 the prior week). The law makes Illinois the first US state to require independent, third-party audits of the safety practices of large frontier AI developers, filling a gap left by the Trump administration's withdrawal of federal AI oversight initiatives.
Why it matters
Any developer or deployer with Illinois-connected operations — which covers most major AI companies — must now prepare for mandatory external safety audits, creating legal exposure for gaps in model evaluation, incident response, and risk management documentation. The 110-0 House vote and bipartisan Senate support signal this model is likely to spread to other states.
Action needed
Identify which frontier AI developers in your client portfolio are subject to Illinois jurisdiction, map current safety audit practices against the bill's requirements, and begin gap analysis now before implementing rules are published.