It’s worth asking into, whether sufficiently vigorous vigilance could have aborted the plot.
Even if it is debatable, Trump has just gotten himself more publicity, and there is enough truth to this to stick to the Bushes.
The serious questions should start with the “wall” the Clinton cabal created barring communications between the FBI and CIA; the ignored opportunities to take custody of bin Laden, and Bubba’s abject failure to substantively reduce the threat from al-Qaeda after the embassy bombings.
But Trump will never ask those questions .. those that may embarrass Clinton.