The president-elect’s market-friendly appointments to Treasury and other agencies brought relief to investors. The trade threat suggests that might be premature.

With a Monday evening promise on Truth Social that his incoming administration will slap 25 percent tariffs on all goods from Canada and Mexico — as well as increasing already existing tariffs on China — Trump sent reporters (and investors,

Reaction to Trump's day one promise to slap tariffs on three of the America's key trading partners: Mexico, Canada and China. The president-elect framed the proposal as a response to the fentanyl crisis.