Paul Waldman talks with MSNBC’s Chris Hayes about the likelihood that someone either in or close to the Secret Service leaked the story of a White House volunteer’s alleged dalliance with a sex worker in Cartagena while working advance for President Barack Obama’s visit there in 2012-and the implications of a rift between the president’s staff and the people sworn to protect his very life.

Paul Waldman is a weekly columnist and senior writer for The American Prospect. He also writes for the Plum Line blog at The Washington Post and The Week and is the author of Being Right Is Not Enough: What Progressives Must Learn From Conservative Success. Follow @paulwaldman1