If President Trump's tariffs against Canada take effect, Canadian Prime Minister Justin Trudeau said the U.S. would immediately face a raft of countermeasures on Tuesday. Why it matters: Trump's comments Monday that he would impose 25% tariffs on Canada and Mexico sent markets sliding amid fears it could start a trade war,

President Donald Trump will enforce tariffs on Tuesday against Canada and Mexico, but at what percentage, he has yet to decide, according to Commerce Secretary Howard Lutnick.

Wall Street's main stock indexes tumbled late Monday to end sharply lower after President Donald Trump announced the start of 25% tariffs on Canada and Mexico. Trump said on Monday that there was no chance for Mexico or Canada to prevent 25% tariffs from taking effect on Tuesday.

Trump’s plans for a crypto reserve including bitcoin and XRP drew skepticism from the likes of Coinbase’s billionaire CEO Brian Armstrong and Palantir cofounder Joe Lonsdale, as a crypto rally began fizzling on Monday.

The rift over the president’s proposed grab-bag of tokens signals a rocky political road ahead for one of the administration’s most audacious tech proposals. Underlying the issue: His administration has yet to articulate how it intends to reconcile the president’s “America First” agenda with crypto networks that are intended to be decentralized and borderless by design.

Prices for bitcoin and the like have soared after Donald Trump set out plans for a U.S. cryptocurrency reserve. He said in a social media post that the stockpile would include bitcoin and ether, as well as smaller tokens XRP,