U.S. President-elect Donald Trump's pledge to impose tariffs on Canada would drive up fuel prices for Americans as it would upend decades-old oil trade from its top crude supplier, analysts said on Wednesday.

That is the question facing Mexico and Canada after Donald Trump took to social media on November 25th and pledged—for the first time as president-elect of the United States—to impose a 25% tariff on both countries on his first day in power.