Ummm, yes he is. He is corrupt in a different way. He is above the law, just like Vic. The main difference is that Vic sometimes is above the law for good, but personal, objectives, while Jack is only above the law for the good of the nation.
I don't see the corruption angle here with the Bauer character. If anything, he exists to protect us from ourselves. The lawas he breaks and the "rights" he tramples on are really to protect the state and the lives of other citizens. Liberals and some libertarians aren't wont to like his tactics