Filing formalizes threat made by President Trump and U.S. Trade Representative amid trade talks with Beijing.

The U.S. trade deficit fell to an eight-month low in February as imports from China plunged.

China promises subsidy compliance with WTO rules, the U.S. stays skeptical.

Imports from US shrink, strengthening Beijing’s resolve to resist concessions.

Trade is essential to the success of America and the American people. It represents about a third of U.S. GDP, and has helped build the U.S. economy into the undisputed #1. Tariffs are bad news for everyone.

Both the U.S. and China are engaged in a tariffs war. With no end in sight, American producers are operating in an environment of uncertainty. To many Americans workers and producers, the trade war hits much closer to home than most grand geopolitical disputes: local economies and jobs hang in the balance.