What Trump ultimately decides to announce on tariffs will be “effective immediately,” White House press secretary Karoline Leavitt said Tuesday. That is logistically dubious, but if that is the case, other nations would have little time to negotiate and could respond by immediately imposing countermeasures such as retaliatory tariffs.

President Donald Trump declared that April 2 is Liberation Day in the United States and ordered the establishment of reciprocal tariffs on all imported foreign goods from countries that charge