Solangel Maldonado writes on Concurring Opinions:
Finally, I would like to return to the argument that polygamy is immoral. Although many Americans hold this view, the Supreme Court has repeatedly held that the majority’s belief that certain conduct is immoral does not mean that it “may use the power of the State to enforce these views on the whole society through operations of criminal law” and Massachusetts and Connecticut allow same-sex marriage despite many individuals’ beliefs that such marriages are immoral. This brings me back to my original question: If there is no evidence that polygamy per se harms children, why shouldn’t consenting adults be allowed to enter into polygamous relationships?
