I suspect that...
...unconfirmed rumors and innuendos will persist and never be fully resoved. People will believe what they want to believe. But what we can say for certain is that Bush's family pulled a few strings to enable him to work on a family friend's senate campaign and that's probably what he spent his time doing. He got a choice silver-spoon-in-mouth assignment while John Kerry was risking his life so that people like George Bush could play dilletante.