Thanks to President Donald Trump's tariff-backed strong-arming, U.S. auto production is winning.

Stellantis NV, parent of Jeep and Ram, this week is the latest to join the Invest-in-America-or-Else campaign. The foreign-owned automaker committed its largest-ever $13 billion outlay in the United States to plants in Michigan, Ohio, Illinois and Indiana at the expense of operations in Mexico and Canada, now on the outside looking in.

General Motors Co. said this summer it would invest $4 billion to move production from Mexico to three U.S. plants — including its shuttered Orion Assembly in suburban Detroit — to build profit-rich, full-size pickups and SUVs, evidence of an electric-vehicle reckoning atop the Motor City's most bullish EV advocate.

With the Detroit industry's highest perc

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