The White House accused Republicans of a political distraction Wednesday after House committee chairmen asked President Obama to release a State Department cable that they said would prove Hillary Rodham Clinton, as secretary off state, signed off on security cuts at the diplomatic post in Benghazi ahead of the attack Sept. 11. According to the committee chairmen, the April 2012 Clinton cable denies the U.S. Embassy in Libya’s request for more security. Five months later, the outpost in Benghazi was attacked and four Americans were killed, including Ambassador J. Christopher Stevens.