President Bush, reacting to "second-guessing" over his handling of intelligence information ahead of the Sept. 11 attacks, said he would have acted to foil the attackers had he known what they were planning. (ABCNEWS.com) Bush on Defensive Says If He’d Known, He Would Have Acted to Foil Terror Plot May 17 — President Bush said today that if he had known terrorists planned to "use an airplane to kill Americans," he would have done everything possible to stop them, but the furor over his administration's alleged failure to respond properly to pre-Sept. 11 terror attack information continued to...