Commerce Secretary Howard Lutnick reminded us of an important but little-discussed part of trade negotiations with Canada and Mexico -- "virtually 75%" of trade between the U.S. and its two neighbors is "already tariff free" because of the USMCA agreement.

President Trump has threatened to increase Mexico’s tariff rate to 30 percent starting Aug. 1, claiming the country hasn’t sufficiently tackled drug cartels.

President Donald Trump on Saturday threatened duties of 30% on products from Mexico and the European Union, two of America’s biggest trading partners, in an ongoing tariff campaign that’s upended global trade since he retook office in January.