How does religion support government in the United States? What implications does this support hold for the separation of church and state idea?

Religion sometimes meddles with government matters when it concerns morality. Laws are made out of implementing order, and stopping people from committing immoral acts. But for liberated countries like USA, the Church does not strongly meddle with issues like homosexuality because of their modernist views. But there must really be a boundary between Church and governments to avoid conflicts.