Endangered Species Transparency and Reasonableness Act of 2025

The Endangered Species Transparency and Reasonableness Act of 2025 requires federal agencies to publish online the scientific data used to list species as endangered or threatened, with limited exceptions for state privacy laws or classified defense information. It also mandates a monthly updated, searchable database of federal spending on lawsuits related to the Endangered Species Act, including case details, involved agencies, and funds expended. This bill directly affects agencies like the Department of the Interior, Environmental Protection Agency, and National Marine Fisheries Service, as well as states, tribes, and local governments that provide data or are involved in litigation. The law aims to increase transparency in species listing decisions and federal spending on legal disputes under the Endangered Species Act.