You believe wrong.
It is a legal issue.
Carpro
See my post in the "illegal Immigrants" section. All law is moral. There is no rational basis for law without morality. Thus, it is imperative that we build on a moral foundation otherwise our laws will become immoral. To separate the two will either lead to extremes like anarchy (no law) or authoritarianism (government is the arbiter of law) but will also be open to abuses.
If you view law as being based upon moral principles, then you hold to the old style common law principles. THeir idea said that a jury first decided if the law was moral, then if the person who violated the law was guilty. The basic structure was that law was first subject to moral judgment. If that is the case, then this is not merely an issue of law, but morality.
I, personally, hold to a common law understanding of law and therefore believe that we should first judge the law on the basis of it being moral.