re: Why should he?
it wouldn't surprise me if Bush never mentions space again, win or lose this November.
If Foale goes to the White House and Bush DOESN'T mention the space plan I think there are some serious concerns about waivering support at the top. Another opportunity will be when the Aldridge Commission releases their recommendations. I don't see it never getting mentioned by Bush again unless he is dumping the idea.
Also, there will be presumably three debates. The space plan will undoubtedly be brought up at some point.
A good article here points out the need for bipartisanship or this will go nowhere.
The moment space exploration becomes partisan, just give up, go home, because space initiatives have longer baselines than political cycles. They can only survive if they’re not partisan.â€