Vice President Joe Biden participates in a round-table discussion on gun violence at Virginia Commonwealth University with Sen. Tim Kaine, D-Va., on Friday. The panelists included people who worked on gun safety after the 2007 Virginia Tech shooting. Steve Helber/AP hide caption

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Republican Rep. Tim Huelskamp, shown in June 2012, says the U.S. won't default unless the president chooses to let it happen. John Hanna/AP hide caption

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Vice President Joe Biden shows the certificate of the Electoral College vote for Ohio to House Speaker John Boehner during a joint session of Congress on Friday. Susan Walsh/AP hide caption

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House Speaker John Boehner, R-Ohio, joined by House Majority Leader Eric Cantor, R-Va., speaks to reporters about the "fiscal cliff" negotiations at the Capitol on Friday. J. Scott Applewhite/AP hide caption

itoggle caption J. Scott Applewhite/AP

House Speaker John Boehner pauses during a news conference Thursday. House GOP leaders abruptly canceled a vote on his measure after they failed to round up enough votes for it to pass. Jacquelyn Martin/AP hide caption

itoggle caption Jacquelyn Martin/AP