Trump underscored his intention to use tariffs, a tax on foreign goods, as a tool of international economic policy and an increasingly vital source of government revenue.

President Donald Trump on Tuesday warned that even more tariffs could be coming as soon as next week: This time China was his target, as Trump threatened to unleash a wave of higher taxes on imports from America’s second-biggest trading partner.

North American car companies have operated across borders for three decades. Tariffs would raise prices and cost jobs in the short run, analysts say.