The arrest of hundreds of South Korean workers building a battery plant at a Hyundai manufacturing campus in Georgia underscores the inherent tension in President Trump's policy goals.

The big picture: The Trump administration's fundamental economic policy is that companies should build factories in America. It's particularly keen on automakers — foreign or domestic — expanding their U.S. production. • But his simultaneous crackdown on immigration means there can be a shortage of highly skilled engineers with the know-how America lacks — in this case, advanced battery production. • You can't build a factory if all the workers get arrested.

Catch up quick: 475 people — including workers at Hyundai's joint battery plant with LG Energy Solution, its construction company Hyundai Engineer

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