You consider President Bush to be an "egghead"?
Depends which President Bush you are talking about. GHWB is a defeated pol. GWB is POTUS. Neither have, to my knowledge, specifically endorsed this "NAU" nonsense. Nor has any sober-thinking sitting Cabinet member, Senator, or Representative.
Anyone can stack CFR reports, graduate thesis, editorials, professor's remarks or talk show rant as high as the Empire State Building and it wouldn't change the basic political reality: The screwball NAU concept wouldn't pass the laugh test in Washington. Nobody with any actual power or influence believes the Amero will replace the Dollar or that the US Marines will become the North American Marines.
And as far as being petrified of a highway is concerned, I have adopted this personal slogan: "I-69 and so does my wife!"
(the preceeding comment is for humor purposes only and should not be misconscrewed to indicate the actual beliefs of the Freeper in question ... I have to say that 'cause my Mom is a Freeper)