DamnYankee
Loyal to the end
Or by Buddha in the Dhammapada, or Allah in the Q'uran, or Ahura Mazda, or Secular Humanism, or by individual limits set by themselves, or by Jeebus in the Simpsons....
Morality is defined in many different ways, and all are guaranteed the right to follow whichever moral standard they believe or set for themselves. It's called the 1st Amendment, written by the founders, passed, ratified.. Attempting to say, "It's a sin therefore it should be against the law!" is both unconstitutional, and repugnant to any actual conservative who believes in individual freedoms and responsibility. Either you are responsible to and for your own soul, or you pass that responsibility onto the government in the hopes that government can provide you virtue you cannot for yourself, but thank all the heavens that you cannot force your incompetence and weakness onto the rest of us, nor can you force people to follow your "Moral Values Set by God." You'll have to actually convince people to believe in your religion to get them to follow those moral values.
I can thank the little gods every day that you cannot force your religion onto me. The Government is absolutely the worst and most morally corrupt institution wherewith to pound your "moral virtues" into others.
The Founders were Christian, and their morality was based on Christianity.