The one uniting value that American Christianity has is the perpetuation of American Christianity. That's it. It's nothing but a vestigial power structure that no longer has any purpose other than to exist, but will do anything to keep existing. Attack the queer, condemn the poor...do whatever you want. There is no authority that you have to answer to so, by default, Christianity is whatever you say it is. People have been limit testing that for generations now, and it keeps bending without finally breaking.