As a legal matter, President Donald Trump's trade war rests on the claim that imports to the United States constitute an "unusual and extraordinary" threat requiring urgent executive action.
That's an absurd argument, of course. The fact that Americans choose to buy or sell goods across international borders is not an emergency—it's not even a minor worry—and certainly should not justify a massive expansion of executive power.
But Trump is going to do whatever he wants until someone stops him. On Wednesday, the Senate had a chance to do that. Instead, Republicans voted overwhelmingly to keep the "emergency" going, and thus to keep the trade war going too.
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