The Definition of Bigamy
If you want to read a terrible judicial opinion. try to plow through Judge Clark Waddoups decision assessing the constitutionality of Utah’s law defining bigamy. The actual issue in the case is not trivial. Utah has a statute prohibiting polygamy that defines the practice to include a married person who knowingly cohabitates (in a sexual way) with another. In other words, you don’t have to be legally married to more than one person to be guilty of bigamy. That’s certainly odd and might be unconstitutional, though I’d want to think about that more carefully.
But oh what a journey you must take to understand the Court’s conclusion. (And you thought The Hobbit movies were long and tedious). I would give you a summary, but some disasters just speak for themselves.