Mexico dominates U.S. imports of heavy-duty trucks, accounting for 82.31% of the total this year. The United States also has its second-largest deficit with Mexico.ustradenumbers.comAdd heavy trucks and pharmaceuticals to the long list of imports President Trump has targeted for tariffs in his quixotic battle to rid the nation of its $1 trillion annual trade deficit.Trump announced on Thursday he was imposing 100% tariffs on branded or patented pharmaceutical products – essentially an embargo – and 25% tari ...