I've always had my suspicions of Bush's membership in the UMC.  He certainly doesn't acknowledge the majority of the church's teachings on social justice, peace, environmental and economic issues, etc.  And his personal piety (at least what we can glean from the bits that are leaked) seems more at home in a fundemantalist non-denominational congregation than in the UMC.  But he also worships fairly regularly at an Episcopal church in DC.  It's all seemingly incongruous, which reinforces my suspicion that he only uses religion publicly when it suits his purposes.