Follow the Money

Boston Calling

Sarah Chayes, an expert at the Carnegie Endowment for International Peace, says we need to talk about corruption in America.

Also, we visit a retraining programme for US steelworkers; we find out how Donald Trump’s plan to make Mexico pay for a border wall could backfire; we discover the secrets of the billion dollar hair trade industry; and we meet the guy who Venezuelans turn to when they want to know what their currency is worth — when he’s not too busy helping customers at the hardware store he works at in the US.

(Image: A magnifying glass is used to inspect newly printed bills at the Bureau of Engraving and Printing in Washington, DC. Credit: Mark Wilson/Getty Images )

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