Again, why?
Because they are adept at using their Constitutional rights?
Once again, you need to remember they can't do anything the Constitution doesn't allow. Were they to pass such a law, the SC would strike it down in short order. Sort of like what happened in your "evolution sticker" example.
Why are you concerned?
Whoa, calm down, buddy. No need to shout.
Any time I provide an example, you brush it off and essentially say "yeah, but that doesn't count". I'm not interested in sitting here and citing law after law, only to have you act like I haven't said anything at all.
So anyhow, take a few deep breaths and sit back from the computer. It seems to me that you're the one that's fired up, and life's too short to get upset about this stuff. All we can do is vote our hearts, be aware of our responsibilities as citizens, and for some of us, do our best to uphold the values of the constitution.
You may feel that as a christian, it's your duty to mold our society to conform to the bible. I feel differently, and that's fine. The great thing about our country is that we have the privilege to believe what we want.