Which of the ten commandments do you want to see enforced by government?
Thou shall not commit murder
Thou shall not steal
Thou shall not bear false witness (lie under oath)
Thou shall not commit adultery (marriage is a contract and adultery is a violation of that agreement; if you want the government out of all marriage agreements, say so)
Additional laws do exist (whether you want them to or not) regarding:
"Keeping the Sabbath holy." See Sunday Blue Laws (try to by alcohol before noon on Sunday).
"Taking the Lord's name in vain." You may think that you have free speech but there are areas of profanity against religion that are actually considered "hate speech" and unprotected. And this holds for all religions (especially islam, today) in America. These laws tend to be written to apply to persons mocking someone else's deity but the concept is there.
That would be 4 laws that I agree should be based on the 10 commandments (although many states removed the adultery laws which is okay in their minds now that there is no fault divorce, I assume even though someone is still legally wronged).