The tariffs are not happening immediately — at least for Mexico and Canada. But with China's tariff still in place, the country decided to respond on Tuesday.

Both Canadian Prime Minister Trudeau and Mexican President Sheinbaum said they had agreed to bolster border enforcement efforts in response to Trump's demand to crack down on immigration and drug smuggling.

The pauses—which allow a period of negotiations over drug trafficking and border security—provide a cool-down period after a tumultuous few days that put North America on the cusp of a trade war.