By your reasoning, if the Alabama legislature outlawed stealing, with the majority of lawmakers saying 'because it is in the Ten Commandments', the law should be declared Unconstitutional.
Extremist Pretzel logic strikes again.
Feh!
Nope. That's not my logic, nor have I claimed such. But if they adopted the Ten Commandments as statutory law, then it absolutely would be unconstitutional.
Perhaps you have hit on the difference. Adoption of religion by government does not mean expressing that they like pieces of a religion, rather than the whole thing. Saying the Ten Commandments are good and we use some of them in our law, then, is not adoption of religion. Saying the God I believe in governs the affairs of the state and all its citizens is.