Outlaw the worse stuff and mandate the best stuff. There is an ethical decision in what to put in law. The marketplace essentially decides this. Theologians, bishops and advisors can inspire us to morality, but they can't legislate it. Law is smaller.
Morality is what is good.
I like the television show West Wing. It is trying to show a White House trying to do it right. We can make great progress in making moral decisions in our own lives by simply trying to do it right.