Trump MouthTodd KraininPresident Donald Trump has gone after General Motors for its recent announcement that it would mothball several American plants and layoff thousands of workers. But Trump's slams are ill-advised.

GM has been doing the right thing for a change: It's proactively responding to shifting market realities so that it doesn't have to come rattling its tin cup in Washington again, I note in my latest column at The Week.

If Trump really wants to help GM—and protect auto jobs in the long run—he should stop calling himself Tariff Man and make trade peace with the world, especially America's neighbors and China.

His steel and aluminum tariffs have hurt domestic carmakers, his newly renegotiated NAFTA will raise costs of cars just when demand is plummeting, and his threats to further hike tariffs on Chinese will hurt the pocketbooks of working-class Americans without boosting their job prospects.

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