Sen. Mitch McConnell (right) walks with Sen. John Barrasso to a news conference about the compromise Tuesday. Evan Vucci/AP hide caption

itoggle caption Evan Vucci/AP

Cardin, right, confers with Senate Foreign Relations Committee Chairman Sen. Bob Corker, R-Tenn. during a committee markup meeting on the proposed nuclear agreement with Iran Tuesday. Win McNamee/Getty Images hide caption

itoggle caption Win McNamee/Getty Images

Think of reconciliation as the biggest ladder in the game Chutes and Ladders — a procedural shortcut. But a presidential veto of whatever gets passed through reconciliation means tumbling back down a chute. Ben Husmann/Flickr hide caption

itoggle caption Ben Husmann/Flickr

Senate Majority Leader Mitch McConnell says he won't let the chamber vote on Loretta Lynch — the nominee to become the next attorney general — until the Senate passes its human trafficking bill. Mark Wilson/Getty Images hide caption

itoggle caption Mark Wilson/Getty Images

Tom Cotton, R-Ark., the freshman senator and Harvard graduate senator with a record of tough talk on foreign policy. Carolyn Kaster/AP hide caption

itoggle caption Carolyn Kaster/AP

"It is a waste of time. We will not allow a conference to take place. It won't happen," Senate Minority Leader Harry Reid said Thursday about the possibility of the two chambers reconciling Department of Homeland Security funding bills. J. Scott Applewhite/AP hide caption

itoggle caption J. Scott Applewhite/AP

Senate Majority Leader Mitch McConnell has offered Democrats a Department of Homeland Security funding bill without provisions, but Democrats still want a commitment from House Speaker John Boehner. Chip Somodevilla/Getty Images hide caption

itoggle caption Chip Somodevilla/Getty Images