So, if 51% of the people voted to make Christianity illegal, you'd be OK with that? The whole point of our Constitution and Bill of Rights is protection of individual rights. We try to limit the "tyranny of the majority" so that certain defined rights of minorities are not usurped.
This could happen, incidentally, but would require more than a simple 51% nationwide vote. The Constitution could be amended to allow the government to prohibit the practice of religion.
One of the negative fallouts of the liberal judicial activism of the mid 20th century is the loss of respect on both sides of the aisle for the Constitution. At least that's what I sometimes fear. To me, the medicinal marijuana case before the Supreme Court is a no brainer--restrictions on locally grown marijuana in any given state cannot be regulated by the federal government (as far as its use in state goes) because of the commerce clause. Though there is a lot of jurisprudence suggesting that it can be. Today, conservatives feel a lot less restrained by a strict reading of the Constitution--and that frightens the shit out of me.
Being a "free" nation means that people must be free to do some things that the majority doesn't like. Otherwise, what is the meaning of freedom?
Mill discusses this quite a bit. Being a Utilitarian, he of course had to discuss why such a thing is actually good, and not just something to be put up with.
The will of the people used to approve of slavery, racial and sexual discrimination and the extermination of Native Americans. What about the will of the German people in the '30s and '40s? (GODWIN'D!)
This is, of course, why the Bill of Rights is so important, and why it may be dangerous to make loose readings of it.
You suggest that there could be Constitutionally allowable laws that would prevent same-sex marriage. Without reference to religion or morality, please articulate what the state's interest is in preventing two people of the same sex from visiting each other in the hospital, hold property as tenants in the entirety or holding dower/curtesy rights?
I know this is for AD, but arguments are out there. Basically, marriage's historical purpose has always been to produce children. This is impossible in a same-sex marriage. The state has an interest in seeing that children are being born. But same-sex marriage is hardly a threat to this. Birth control, no-fault divorces, and the social acceptance of heterosexual couples who can't or refuse to have children are bigger threats. Marriage as a coming together by choice of two people who love each other but can leave at any time is a new thing, relatively anyway. This fuck*ng stupid same-sex marriage debate sidesteps that entire issue. Fact is the concept of marriage and family has changed radically, and the fact that same-sex couples want to get married only reflects this change, but is not a cause of it.