xAI, the AI company developing the Grok language model, filed the lawsuit on April 9, 2026, challenging the law on First Amendment, Dormant Commerce Clause, due process, and equal protection grounds. The U.S. Department of Justice intervened, arguing the law violates the Equal Protection Clause by requiring AI companies to prevent unintentional disparate impact based on protected characteristics like race and sex. The law's enforcement date has already slipped twice—from February 1, 2026, to June 30, 2026. Governor Jared Polis's AI Policy Work Group released a proposed framework in March to substantially narrow the law's scope, add a 90-day cure period, and push the effective date to January 1, 2027. No replacement bill has been formally introduced as of early May, and the Colorado legislature adjourns May 13.
The stay leaves AI companies in legal limbo while lawmakers race against the May 13 adjournment deadline to either reform or replace the law. The case represents a federal challenge to state AI regulation amid broader Trump Administration pressure on AI governance. Attorneys should monitor whether the legislature acts before adjournment and track the underlying constitutional claims, which will likely resurface in similar state AI regulations across the country.