US Senate Passes Bipartisan AI Transparency Act Requiring Model Cards

The United States Senate has passed the AI Transparency Act with a 67-33 bipartisan vote, marking a significant step toward federal AI regulation. The legislation requires companies deploying AI systems in consequential decision-making contexts to publish standardized "model cards" disclosing the system's capabilities, limitations, training data characteristics, and known failure modes.

The bill specifically targets AI systems used in employment screening, housing applications, credit decisions, and healthcare. Companies must update these disclosures when making significant changes to their systems and must conduct bias audits using standardized methodologies.

The legislation includes a safe harbor provision for companies that comply in good faith with disclosure requirements, limiting liability for unintentional harms. Critics argue this provision is too broad and could shield companies from accountability for foreseeable harms.

The bill now moves to the House of Representatives, where it faces a more uncertain path. Tech industry lobbying groups have expressed mixed reactions, with some welcoming the clarity of standardized requirements while others argue the disclosure mandates could expose proprietary information.