Hoping to shape history's judgment, President Bush told the Sept. 11 commission Thursday his administration tried to protect America from terrorists as warnings grew before the devastating attack of 2001. Members pressed him on his response to a controversial memo that raised the threat of plane hijackings and attacks with explosives. "I answered every question they asked," Bush said after he and Vice President Dick Cheney met with the 10-member commission for three hours in the Oval Office. Presidential scholars called the session unprecedented. Some of Bush's answers were "surprising" and "new," said former Sen. Bob Kerrey, a Democratic member,...