President Donald Trump has threatened to pile an additional 40% tariff on any product that Washington determines to be “transshipped” through another country, a punishment aimed at stopping goods mainly from China dodging US duties.

The U.S. Court of Appeals for the Federal Circuit in Washington, D.C., will consider the legality of "reciprocal" tariffs that Trump imposed on a broad range of U.S. trading partners in April, as well as tariffs imposed in February against China,

U.S. President Donald Trump slapped steep tariffs on exports from dozens of trading partners including Canada, Brazil, India and Taiwan, pressing ahead with his plans to reorder the global economy ahead of a Friday trade deal deadline.

Just hours before an Aug. 1 deadline expired, the US president imposed sweeping new tariffs on imports from global trading partners, escalating an aggressive trade policy aimed at reducing the US trade deficit.

U.S. trade partners are reacting to President Donald Trump’s executive order that would introduce new tariffs on many of them in seven days.