President Donald Trump said tariffs scheduled to hit Canada and Mexico next month were “on time” and “moving along very rapidly” following an initial delay, even as a US official cautioned the schedule could be less certain.

President Donald Trump said on Monday that tariffs on Canadian and Mexican imports are "on time and on schedule" despite efforts by the countries to beef up border security and halt the flow of fentanyl into the U.

Yahoo Finance will chronicle the latest news and updates on Trump's tariffs — from the threats to the eventual policy.