Europe’s worst-case scenario for the future of transatlantic economic relations rose to the surface this week when President-elect Donald Trump gave a clear signal that he’ll use American trade might as a means to exert foreign policy leverage.

Leaders in Mexico and Canada responded to the president-elect’s proposed new tariffs. Observers said the plan might just be the first step in negotiations.

The president-elect’s threat to hit Canada, Mexico and China with new tariffs is already rocking business and diplomatic relationships and could topple the trade pacts he signed in his first term.

Donald Trump's proposed tariffs could have major consequences for California's economy, which has a lot riding on trade, especially with China and Mexico.

Among the roster of officials filling out the Trump 2.0 team, the president-elect has picked more than a dozen operatives, lawyers and officials who attended his criminal trial in Manhattan earlier this year,

U.S. oil and gas lobbying groups said on Tuesday they were wary of President-elect Donald Trump's threat of tariffs on Canada and Mexico, saying such policies could affect consumers, industry and security.