** FILE ** The United Nations building is reflected on the window of the U.S. mission to the U.N. as portraits of American President Barack Obama, left, Vice President Joseph R. Biden, and then-Secretary of State Hillary Clinton hang in the lobby, Saturday, Sept. 18, 2010, in New York. (Associated Press)
Vice President Joseph R. Biden (left), accompanied by New York Mayor Michael Bloomberg, speaks in New York's City Hall Blue Room on March 21, 2013. Relatives of shooting victims from Newtown, Conn., stood with Bloomberg and Biden as they spoke in favor of an assault weapons ban. (Associated Press)
Vice President Joseph R. Biden posted this photo of summer fun on his twitter feed in 2012.
**FILE** Vice President Joseph R. Biden speaks on a cell phone from a member of the audience at the Disabled American Veterans National Convention in Las Vegas on Aug. 4, 2012. (Associated Press/Las Vegas Review-Journal)
**FILE** Vice President Joseph R. Biden speaks on a cell phone from a member of the audience at the Disabled American Veterans National Convention in Las Vegas on Aug. 4, 2012. (Associated Press/Las Vegas Review-Journal)
Vice President Joseph R. Biden posted this photo of summer fun on his twitter feed in 2012.
** FILE ** The United Nations building is reflected on the window of the U.S. mission to the U.N. as portraits of American President Barack Obama, left, Vice President Joseph R. Biden, and then-Secretary of State Hillary Clinton hang in the lobby, Saturday, Sept. 18, 2010, in New York. (Associated Press)
President Obama urges Congress to take action on measures to protect children from gun violence on Thursday, March 28, 2013, while speaking in the East Room of the White House in Washington. Standing with Mr. Obama are Vice President Joseph R. Biden (left) and, according to the White House, law enforcement officials, victims of gun violence and others, whom the White House did not want to name. (AP Photo/Susan Walsh)
President Obama urges Congress to take action on measures to protect children from gun violence on Thursday, March 28, 2013, while speaking in the East Room of the White House in Washington. Standing with Mr. Obama are Vice President Joseph R. Biden (left) and, according to the White House, law enforcement officials, victims of gun violence and others, whom the White House did not want to name. (AP Photo/Susan Walsh)
