Our nations laws are based on the 10 Commandments (well, before political correctness replaced the Constitution, anyway). Doesn't it make sense to put them where those laws actually are? That's what a courthouse is. A place of those laws.
Seiously. It's late here. You're on your own.
There's coveting of wives and boats going on, there's someone saying G-D, people are golfing Sunday and many here consider Tom Tancredo a God.
Our Legal framework has very little to do with the Ten Commandments, our system is about 50 prima donnas hating and not trusting each other or themselves. They were putting checks and balances on each other.