The U.S. negotiating team seemed stretched too thin to score the trade concessions Trump expected would come at the end of the 90-day tariff reprieve.

President Donald Trump cranked up the pressure Monday on America’s trading partners, firing off letters to heads of several countries, informing them of their new tariff rate. But at the same time, Trump took some of the edge off by signing an executive action Monday to extend the date for all “reciprocal” tariffs,