Attorney General Eric Holder speaks at the Northwestern University law school, Monday, March 5, 2012 in Chicago. Holder said Monday that the decision to kill a U.S. citizen living abroad who poses a ... more 
Attorney General Eric Holder speaks at the Northwestern University law school, Monday, March 5, 2012 in Chicago. Holder said Monday that the decision to kill a U.S. citizen living abroad who poses a terrorist threat "is among the gravest that government leaders can face," but justified lethal action as legal and sometimes necessary in the war on terror. (AP Photo/Brian Kersey) less 
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Associated Press | Photo By Brian Kersey
Mon, Mar 5, 2012 5:35 PM EST