President Donald Trump has said that something needs to be done to even what he views as a global trade imbalance between the United States and other countries. And that “something” is steep tariffs on steel and aluminum, goods made in China and cars imported from Europe and Asia. Even Canada, America’s largest trade partner, has become a target of Trump’s tariff threats.

Negotiators will be hard-pressed to wrap up talks on the North American Free Trade Agreement anytime soon, considering the Trump administration’s list of objectives for the deal, Canada’s envoy to the United States said.