U.S. boots on the border?

President Trump orders the National Guard to the U.S.-Mexico border but the White House can't say how many troops will be deployed - and one governor says she won't comply. Plus, Scott Pruitt defies John Kelly and goes on a media blitz, as sources say the embattled EPA administrator is on thin ice with his boss. Join John Avlon and the panel.To learn more about how CNN protects listener privacy, visit cnn.com/privacy

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