The Senate voted 50 to 46 on Wednesday to eliminate President Trump’s authority to impose steep tariffs on Canada, something he exercised again in recent days by ramping up tariffs on the country by another 10 percent because of a television ad that criticized his policies.

Four Republicans voted with Democrats to repeal Trump’s tariffs on Canadian goods: Sens. Susan Collins (Maine), Mitch McConnell (Ky.), Lisa Murkowski (Alaska) and Rand Paul (Ky.).

They already did so in April, when the Senate voted April 2 to pass the same........

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