Donald Trump, mercantilist. Econ prof James Feigenbaum on the trade war

A FULL BLOWN TRADE WAR is now raging, after Donald Trump started slapping tariffs on goods from Canada, Mexico, China, and now, most of Europe. But what is his theory, and does it have any economic history? OUR GUEST is a JAMES FEIGENBAUM, a professor of economics who formerly worked for the Federal Reserve Bank, who says the president is following a centuries old script -- that most countries abandoned a long time ago. We also talk about another area -- the impact of illegal immi...