Brian Manzullo

Detroit Free Press

Donald Trump took credit today on Twitter for Ford Motor Co.'s decision to invest $700 million in Michigan's Flat Rock Assembly plant.

Shortly after Ford's announcement - in which the company also said it would cancel plans to build a $1.6-billion plant in Mexico - Trump quoted a tweet from his social media director, Dan Scavino, that says "Ford to scrap Mexico plant, invest in Michigan due to Trump policies," linking to a Fox News story.

Ford CEO Mark Fields said during the company's announcement today that the decision is based - in part - on the pro-business policies and climate that Ford expects during Trump's presidency.

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This comes just hours after Trump blasted General Motors in a tweet, saying GM "is sending Mexican made model of Chevy Cruze to U.S. car dealers-tax free across border. Make in U.S.A.or pay big border tax!"

Trump has repeatedly assailed the North American Free Trade Agreement for speeding the transfer of U.S. automotive production to Mexico. Trump, a noted fan of GM's Cadillac brand, had previously spared the automaker from criticism, instead taking aim at Ford Motor Co. for manufacturing vehicles in Mexico.

The U.S. auto industry has defended NAFTA as critical to its business model, but Trump has described the deal as venomous to American jobs. He has proposed a 35% tariff on Mexican-made goods imported to the U.S.

USA TODAY's Nathan Bomey contributed.