United States v. Haggar Apparel Co., 526 U.S. 380 (1999) is a United States Supreme Court holding that Chevron deference is appropriate for regulations issued by Customs on behalf of the Treasury. The statutes authorizing customs classification regulations were found consistent with the usual rule that regulations of an administering agency warrant judicial deference; and nothing in the regulation in question persuaded the Court that the Customs and Border Patrol intended the regulation to have some lesser force and effect. The statutory scheme did not support the importer's argument that the regulation only applied to customs officers themselves as opposed to the adjudication of importers' refund suits in the Court of International Trade. The Customs Service (which is within the US Treasu