The chairman of the House Armed Services Committee, in a harsh attack on the Obama administration Monday, accused the president of viewing American military power as a negative force in the world, and planning to “gut” defense spending through the congressional deficit-reduction committee. “It is my suspicion that the White House and congressional Democrats” designed the supercommittee process “for one purpose: to force Republicans to choose between raising taxes or gutting defense,” said California Rep. Howard P. “Buck” McKeon, the House Armed Services Committee chairman.