You can always make the case for presidential barnstorming to promote upcoming legislation. President Obama is in Wisconsin today promoting health care reform. There's something a little tacky, I think, about taking victory lap after victory lap for something that you've already passed. Yes, the getting-America-moving tour probably has some psychic benefit for the economy and I'm all for that. But at a certain point a tour like this seems a little silly.
That said, is there really much debate about the stimulus anymore?
This article available online at:
http://www.theatlantic.com/politics/archive/2009/06/joe-bidens-excellent-tour/19203/