The purpose of this legislation, known as the Tariff Transparency Act of 2025, is to require the United States International Trade Commission (USITC) to investigate and report on how proposed and existing tariffs on imports from Mexico and Canada affect American businesses and consumers. The goal is to better understand the economic impact of these tariffs and the uncertainty they create in trade relations. Key provisions of the legislation include a mandate for the USITC to assess several specific areas.