U.S. Vice President Joe Biden (L) leads the first meeting of the working group to explore solutions following the Newtown massacre with Philadelphia Police Commissioner Charles Ramsey and other law enforcement leaders from around the country and administration officials in the Eisenhower Executive Office Building December 20, 2012 in Washington, DC. President Barack Obama put Biden at the head of the working group that was formed in the wake of the second-deadliest school shooting in U.S history.