A timeline of multi-front litigation regarding the administration and enforcement of an exclusion order issued by the US International Trade Commission (ITC) under Section 337 of the Tariff Act of 1930 (19 U.S.C. § 1337). The timeline reflects proceedings before the ITC, US Customs and Border Protection (CBP), the US Court of International Trade (CIT), the US Court of Appeals for the Federal Circuit (CAFC), and federal district court.