So difficult to understand:
Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof
It's all a matter of what the meaning of "is" is and since it's just about sex, don't worry about it.
Besides, after teaching that contraception was a sin for over four hundred years all the non-Catholic "Christian" churches changed their mind, said that God changed His mind, and now don't really care anyway.
Look at the huge demonstrations and protests against this. That tells you all you really need to know about how much US "Christians" (Catholic and non-Catholic alike) actually care about the First Amendment protection for freedom of religion. US "Christians" care about economics, not about Christianity. They'll roll over and play dead whenever the USSC says they should. As long as the "invisible hand" is free to keep fisting the middle class it's all good.
JMHo