The president said his advisers would devise new tariff levels reflecting countriesβ tariffs, taxes, subsidies and other policies affecting trade with the United States.
Speaking in Paris at an artificial intelligence summit, the vice president gave an America First vision of the technology β with the U.S. dominating the chips, the software and the rules.
European leaders have said that they will respond firmly to higher levies on steel and aluminum, but they have yet to say what that retaliation will look like.
Prime Minister Justin Trudeau, in a talk with business leaders, said Canadaβs wealth of critical minerals are behind Mr. Trumpβs comments about making its northern neighbor a U.S. state.
A growing number of countries, including American allies, are striking trade deals as the Trump administration erects a higher fence around its global commerce.
Amid warnings of price increases, Canada moved quickly to retaliate, China said it had planned countermeasures and Mexico said it would soon unveil its response.
To wean itself off Russian natural gas, Europe has found new sources of energy, including imports from the United States. But high costs are straining the economy.
President Trump has insisted that his new tariffs on Americaβs largest trading partners will not increase prices for Americans. But a review of how they work suggests that is not the case.
General Motors and a few other companies make as much as 40 percent of their North American cars and trucks in Canada and Mexico, leaving them vulnerable to tariffs.