Longtime GOP Senate moderate Arlen Specter dies - Article Photos 5/18

FILE - In this Sept. 15, 2009 file photo, President Barack Obama arrives at a fundraising event for Sen. Arlen Specter, D-Pa., at the Pennsylvania Convention Center in Philadelphia. Former U.S. Sen. Arlen Specter, longtime Senate moderate and architect of one-bullet theory in JFK death, died Sunday, Oct. 14, 2012. He was 82. (AP Photo/Charles Dharapak, File)