Forty years ago, I was a Deputy District Attorney in Los Angeles, California. As
such, I filed a lot of cases, but NEVER a bigamy case. I'd file theft and
fraud every time, because the usual reason for the "marriage" was to get
at the spouse's money. Why not file for a clear violation of the law?
Because, even without a religious defense, I did not want to complicate the case
by giving the crook an appeal on the constitutionality of bigamy laws. Prosecuting attorneys are really on the hook here. They take an oath to
enforce the law and uphold the constitution. A bigamy case with religious
overtones means the prosecuting attorney's judgement will be bad-mouthed
whatever he does.