If enacted, they would violate the 2020 deal that the United States inked with Canada and Mexico during Donald Trump’s first term.

The president-elect said that he would impose the across-the-board tariffs on Day 1 and that they would stay in place until Canada, Mexico and China halted the flow of drugs and migrants.

The 25% proposal marked an escalation from his campaign claims, as the ex-president previously proposed raising tariffs by 10%, or by 60% on goods imported from China—which is up from approximately 1% and 11% now, respectively, according to data from research firm Wolfe Research cited by the Wall Street Journal.