Tonight's guests:
- Senator Jon Tester of Montana, member of the Appropriations and Homeland Security Committees and was at today's hearing on emergency border spending
- Mark Mazzetti, national security correspondent at The New York Times, author of "The Way of the Knife: The CIA, A Secret Army and a War at the Ends of the Earth"
After the jump, senior producer Cory Gnazzo with what we're working on for tonight: