I didn't see it but I would bet it was Frank Caliendo from Mad TV. He is on there every week, he took over for Jimmy Kimmel. Not the first time he has made Bush jokes. As for Howie Long I would be willing to bet he is a Republican. Howie once commented on Daniel M. Snyder, the owner of the Washington Redskins, stating that he was pretty sure Snyder was a Republican but he was spending money like a Democrat. That was the year the Redskins were trying to buy a Superbowl victory with the likes of Deion Sanders and others.
Howie Long is a conservative republican. He said so last year on Bill Bennett's "Morning in America" show last year. I think Jimmy Johnson and Terry B may be both right leaning as well