US HB4503

Requires the Council on Environmental Quality to develop and publish data standards within 60 days for collecting and sharing environmental review and authorization data across federal agencies, enabling automated data exchange and reducing redundant reviews

Mandates federal agencies implement minimum functional requirements including automated project screening, case management tools, integrated GIS analysis, AI-assisted comment analysis, and administrative record management systems within 180 days of enactment

Creates a unified interagency data system with a cloud-based authorization portal allowing project sponsors to submit documentation through one secure platform, with real-time tracking of environmental reviews accessible to Congress, agencies, and the public

Requires the General Services Administration to host the authorization portal as a shared service, with implementation deadline of December 1, 2027 for the full unified system and a pilot within one year of enactment

Prohibits the Council on Environmental Quality or agencies from using automated screening tools to unlawfully restrict activities on federal lands, and clarifies the act does not authorize additional regulatory requirements beyond existing NEPA obligations