Were the terrorist individuals you focus on the only known suspects in the US at the time? Would you say the number of suspects would be greater than a handful or several hundred (thousand)?
After the fact it's easy to identify the ones you should have focused on. My question to you would be, should we have rounded every suspected person with ties to terrorism, using any evidence proven or not? Do you think we have enough man power to do this?
Were the terrorist individuals you focus on the only known suspects in the US at the time?
No, one more was know, his name was Zacharias Moussaoui, but he had already been arrested by Minneapolis FBI, so he was no longer a threat. But Minneapolis FBI asked the CIA for help to get enough probable cause in order to request a FISA search warrant for his possessions including his duffel bag.
Even though this information was given to CIA Director George Tenet on August 23, 2001, he and the CIA completely refused to help the FBI, even though he was fully aware of this huge al Qaeda terrorist attack just about to take place inside of the US. Tenet had in fact ordered the rest of the CIA not to help the Minneapolis agents in their desperate request for help to get a FISA warrant for Moussaoui's possessions. In this duffel bag was a receipt from Ramzi bin al-Sheebh, for $14000, which allowed Minneapolis FBI agents after 9/11, to find all of the terrorists in just few days.
So August 21, 2001, out side of Moussaoui, the only other known al Qaeda terrorists that were also known to be inside of the US were Khalid al-Mihdhar, Nawaf al-Hazmi, and his brother, Salem al-Hazmi. They were all found inside of the US and known to the CIA and FBI HQ's by August 21, 2001.
There were not hundreds, just these three that were in the US.
Of course Tom Wilshere said that the CIA and FBI HQ's were just overwhelmed trying to locate these three al Qaeda terrorists, while the evidence shows they had given this search to a single inexperienced FBI agent, Robert Fuller, and then they shut down his investigation by refusing to let him call Saudi Arabian Airlines to get Mihdhar's credit card number.