I don't think he can.
The way I understand EO's they only have jurisdiction on federal property.
The blame is definitely placed on the Republicans.
A Republican Congress passed a Democrat conceived bill, (make no mistake about it, this type of unconstitutional legislation, the Patriot Act, has been brewing in the bowels of the federal bureaucracy for years, whom are all Democrats) and a Republican president signed it.
So much for "conservatives" conserving the Constitution.
The ultimate responsibility and blame for the loss of life and destruction of private property by airplanes being used as missiles on 9/11 is on the shoulders of all of the citizens, politicians, and judges who have supported the unconstituional activity of our federal government.
That unconstitutional activity was the prohibition of a private property owners, the airlines, from exerting their Amendment II and Amendment IX right to invite their customer's to help secure their property and fellow passengers safety from the terror of a hijacker, by letting them bring their arms onboard.
No terrorist would ever attempt to hijack an airplane with the possibility of 10, 30, 70 armed passengers on board.
The probabiliy of success would be virtually zero.
We unconstitutionally disarm ourselves, then act surprised when we become victims of crimminals and terrorists.
The defniniton of insane is doing the same thing over and over again and expecting a different result.
The TSA and the FAA are organizations which fall under the Executive branch of our government.
A Presidential Executive Order, is only valid for organizations which fall under the control of the Executive branch.
Hence, President Bush could stop this TSA stupidity with one stroke of the pen.