How about moving the Churches into a more biblical, traditional stance regarding divorce. And by "divorce" I also mean the Catholic version called "annulment." We would not be nearly in the embarrassingly worldly position we are in with the divorce rate the same as unbelievers if WE CHRISTIANS didn't allow it!
Let the government do what they want regarding recognizing marriage and divorce - when pastors and congregation will not allow a once-married person in their congregation to get married, at the cost of severe discipline and possible expulsion (yes, it's biblical,) that will be a powerful incentive to find reconciliation with a spouse. When even the Church winks at and enables divorce, who wouldn't consider this as an easy out?
I've known of a very few congregations where the pastors took a firm biblical stance on the permanency of marriage, refusing to recognize divorce among those in his flock or re-marry a divorced person (unless under the few extreme, biblical exceptions), and the congregations flourished, knowing the ground rules - Scripture itself.
That sounds reasonable. However, I think you’d be disapointed at the sheer number of Americans who really couldn’t care less about what any given church thinks.