On May 3, 2022, the Office of the US Trade Representative (USTR) published a Federal Register notice commencing its quadrennial review of the tariffs imposed on China-origin goods pursuant to Section 301 of the Trade Act of 1974. USTR initiated the review pursuant to Section 307(c) of the Trade Act, which requires USTR to review the "necessity" of Section 301 actions four years after their implementation.