America's infant formula shortage is very strange and very embarrassing. Nationwide, more than 40 percent of formula is out of stock, and in many states, like Texas and Tennessee, more than half of it is gone. What's going on? The immediate cause is the shutdown of a Michigan plant. But shutdowns and recalls happen all the time, and they rarely cause a national crisis like this. Economist Scott Lincicome says the real culprit lies in America's trade and regulatory policy. He explains how we got here and how we can get back to a rational baby formula policy in America.

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Host: Derek Thompson

Guest: Scott Lincicome

Producer: Devon Manze

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