The Ludicrous Argument Behind Trump’s Tariffs

By The Editorial Board

The editorial board is a group of opinion journalists whose views are informed by expertise, research, debate and certain longstanding values. It is separate from the newsroom.

President Trump’s repeated attempts to impose tariffs have become an encapsulation of his second term. They have hurt the American economy and his own popularity. They also range from legally dubious to blatantly illegal.

With Mr. Trump now engaging in a trade war with Canada — which has decided to stand up to his bullying — we want to step back and explain both the economic and the legal damage from his tariffs. We also urge........

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