You are misinformed. God has always been part of government. It has always been part of law. The basis for most law as we know it to day was a religious text called The Code of Hammurabi. Some of those laws even still stand today almost exactly as written.
Furthermore all rights you have in the USA are God given rights. Read the bill of rights. Your rights are granted by God, the only authority higher than government. The rule of law is based on the idea that there is a higher power than man, and man must act accordingly (and not as if they are themselves Gods harming others). In short, without God in government, you have no rights. You have the legal authority of an animal or a rock. No one says you have to believe in God or have any religion, just don't forget what came first in your "progressive" revisionism. Hopefully in your war on religion you don't end up free from freedom.