The Guardian's editorial today asserts that the motivation for Bush's visit is to assist in his reelection. Could be true, but not, I suspect, for the reasons the Guardian believes. Jonah Goldberg thinks the news pictures of protesters are what the Bush campaign wants.
I don't know if there's a whole lot of political capital to be gained from this visit. One thing I do know, is that as an American living abroad, I would never protest against a visiting American President. Regardless of your motives, you are most definitely feeding the anti-American monster.