This legislation amends the Trade Act of 1974 to expand the authority of the Trade Representative concerning certain foreign trade practices. It permits the Trade Representative to take actions against motor cars and other motor vehicles imported from any foreign country. This authority applies if the vehicles are produced by a firm from a country already subject to a Section 301 duty, or by a firm from the People's Republic of China, the Russian Federation, the Islamic Republic of Iran, or the Democratic People's Republic of Korea. The bill specifically defines these vehicles as those principally designed for passenger transport, encompassing internal combustion, hybrid, and electric models. The bill also establishes new procedural requirements for modifying or terminating actions taken under this expanded authority. The Trade Representative must consult with the petitioner and domestic industry and provide an opportunity for public input, including hearings, at least 30 days before any such modification or termination. Additionally, the Trade Representative may take further actions to maintain or enhance the effectiveness of measures implemented under this new provision. These amendments take effect immediately and apply to existing Section 301 actions.