Michigan and Ohio, other examples of comebacks cited by Mr Trump, have not experienced quite as much success. "We're opening up car plants in Michigan again for the first time in decades. They're really pouring in. Car companies are coming in," said Mr Trump late last month before a rally in Michigan.
He lauded Fiat Chrysler's decision in late February to spend US$4.5 billion to expand its factories in Michigan to produce more SUVs and pickup trucks, a move that would create 6,500 new jobs.
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