President Donald Trump says his tariffs on Canada and Mexico are starting next month. The comment Monday indicates the end of a monthlong suspension on planned import taxes that could potentially hurt growth and worsen inflation.

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.