DOJ intervention in xAI's challenge to the Colorado AI Act (SB 24-205)

Summary

On April 24, 2026, the Justice Department moved to intervene in a suit xAI had filed in the U.S. District Court for the District of Colorado against Colorado's AI Act (SB 24-205), alleging that the Act violates the Equal Protection Clause by requiring AI companies to prevent unintentional disparate impact and by exempting some diversity-oriented practices. It was not a preemption suit filed by DOJ. On April 27, 2026, a magistrate judge entered a stipulated order under which xAI deferred its preliminary-injunction motion until after rulemaking and Colorado's Attorney General agreed not to enforce in the meantime. On May 14, 2026, Colorado enacted SB 26-189, which repeals and reenacts the 2024 Act's provisions as a narrower automated decision-making technology framework. Whether the suit has since been dismissed or declared moot was not confirmed. Overlaps case-055.

Key dates

1. April 24, 2026Issued
2. October 16, 2026Checked against sources
3. October 21, 2026Checked against sources

Developments are added when the record is reviewed. Next review: January 15, 2027.

Evidence

Each passage is quoted from its source. The quoted passages are re-checked against the live pages every month.

1. The Justice Department moved to intervene in a lawsuit filed by artificial intelligence company xAI, challenging a new Colorado law that prohibits so-called “algorithmic discrimination.”

   Supports: DOJ intervened in xAI's suit (it did not file its own preemption suit)

   The Justice Department alleges that the Colorado law violates the Equal Protection Clause of the Fourteenth Amendment

   Supports: Legal theory: Equal Protection, not preemption

   Justice Department Intervenes in xAI lawsuit Challenging Colorado's 'Algorithmic Discrimination' Law U.S. Department of Justice, Office of Public Affairs Primary source

2. On April 27, 2026, Magistrate Judge Cyrus Y. Chung granted a stipulated order sought by xAI and Colorado's attorney general

   Supports: Stipulated order of April 27, 2026

   On May 14, 2026, Senate Bill 26-189 ( SB 189 ) was signed into law, significantly scaling back Colorado's first-in-the-nation artificial intelligence (AI) law

   Supports: Replacement law signed May 14, 2026

   Colorado AI law in flux: Comprehensive replacement bill signed after federal court blocks predecessor's enforcement McDermott Will & Schulte (via JD Supra) Reporting or analysis

3. The act repeals and reenacts those provisions with new requirements regarding the use of automated decision-making technology in consequential decisions.

   Supports: SB 26-189 repeals and reenacts SB 24-205's provisions

   SB26-189 Automated Decision-Making Technology Colorado General Assembly Primary source