To study the draft Trans-Pacific Partnership language, senators have to go to the basement of the Capitol and enter a secured, soundproof room in this hallway and surrender their mobile devices. Ailsa Chang/NPR hide caption

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State Sens. Warren Limmer (left) and Bill Ingebrigtsen talk in the Senate chamber. Limmer said he has been scolded for looking at his colleagues during debate before, and had "to beg forgiveness to the Senate president." David J. Oakes/Minnesota State Senate hide caption

itoggle caption David J. Oakes/Minnesota State Senate

Senate Foreign Relations Committee Chairman Sen. Bob Corker, R-Tenn., center, and the committee's ranking member Sen. Ben Cardin, D-Md., right, were all smiles April 14 after the committee passed an agreement on oversight of Iran negotiations. But the bill has run into some outspoken opponents in the full Senate. Andrew Harnik/AP hide caption

itoggle caption Andrew Harnik/AP

Sen. Bernie Sanders, I-Vt., speaks at a rally demanding presidential action to raise the minimum wage to $15 an hour. Sanders will run to Hillary Clinton's left, trying to elevate economic issues. Win McNamee/Getty Images hide caption

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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

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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