On a 3-mile stretch of farmland in southwest Michigan, Ford Motor Co. is building a battery factory. The technology Ford needs to make cheap, stable batteries to power electric vehicles will come from China’s Contemporary Amperex Technology Co. Ltd., better known as CATL, the world’s biggest battery manufacturer. By most measures, Ford’s deal with the Chinese giant is a coup for the state—it’s getting a $3.5 billion investment in a 2.5-million-square-foot factory, thousands of new jobs and the ability to produce enough batteries annually to power 400,000 electric vehicles when the plant opens in 2026. But for anyone who’s been paying attention, it’s a devastating moment of irony for the US: The deal could have been the other way around.