Pressure is building within House Speaker John Boehner's conference to oust him. Boehner is likely to hold off a challenge — for now. But he could decide to call it quits at the end of this term. Susan Walsh/AP hide caption

itoggle caption Susan Walsh/AP

House Speaker John Boehner at a Capitol Hill news conference last month. He said Wednesday that the Republican-controlled House will file a lawsuit accusing President Obama of failing to carry out laws passed by Congress. J. Scott Applewhite/AP hide caption

itoggle caption J. Scott Applewhite/AP

Newly elected House Majority Whip Steve Scalise of Louisiana (left) and House Majority Leader Kevin McCarthy of California speak to the media following the House Republican leadership elections on Thursday. Kevin Dietsch/UPI/Landov hide caption

itoggle caption Kevin Dietsch/UPI/Landov

House Speaker John Boehner leaves the chamber of the Portuguese Parliament during an April 17 visit in Lisbon. Boehner was in Lisbon as part of an international trip that included visits to Afghanistan and Abu Dhabi. Francisco Seco/AP hide caption

itoggle caption Francisco Seco/AP

House Speaker John Boehner of Ohio, with (from left) Rep. Cathy McMorris Rodgers, R-Wash., Rep. Bradley Byrne, R-Ala., and House Majority Leader Eric Cantor of Va., at a March 25 Capitol Hill news conference. J. Scott Applewhite/AP hide caption

itoggle caption J. Scott Applewhite/AP

President Obama very likely made Democrats' midterm campaign messaging easier by dropping from his new budget a proposal that would have reduced the size of Social Security checks. Matt Rourke/AP hide caption

itoggle caption Matt Rourke/AP