We have a V2 Pope. If by making immoral behavior a Sacrament you mean Gay Marriage, it already is a sacrament, but self celebrated. The Church should still join the families. I am sure there are Knights with gay grandchildren who will want a Catholic wedding at some point, provided the Knights are around in 20 years. If so, people who are now 30 will be 50 and they are fine with gay marriage. If opposing it becomes a litmus test, your ranks will thin. At this point they have become, like the pro-life movement, an adjunct of the GOP. I assure you that a large number of Catholic men over 50 are not Republicans and if you were not so partisan, we would join you in the Knights.