The CLEAN FTZ Act of 2025 aims to enhance oversight and compliance of foreign free trade zones to align with international standards, thereby combating illicit international trade and preventing illegal activities such as drug trafficking, arms smuggling, and money laundering. The legislation requires the Commissioner of U.S. Customs and Border Protection to compile and publish a list of foreign free trade zones within two years of enactment, detailing their identities, locations, and administrators.