He was being told over and over again, attack may just be weeks away! Attack may be "delayed," but still in the works. They were essentially being told that an attack can happen at any time.
Since they didn't appear to have specific information on the kind of attack, where it would occur, who was involved, etc., what exactly do you think could have been done that wasn't done? Close airports, train stations, shopping malls, schools, any public venue that might be a target of a bombing?
In retrospect, we can say things should have been different, but hindsight is always 20/20. Remember that the Clinton administration had gutted a good part of our intelligence apparatus and deliberately made it so that intelligence could not be shared among the agencies, and it takes time to reconstitute those capabilities.
And when you are told month after month “He was being told over and over again, attack may just be weeks away!” Just when do you know the attack will be and what the target will be. Please provide that information from the warnings, otherwise you only know something will probably happen, but don’t know when or where. Is your solution for the president to have invoked martial law, ground all aircraft, stop all trains, ships, trucks?
Please tell me the concrete actions you would have taken based upon “being told over and over again, attack may just be weeks away!”