No, I have proven that the US law was based on the morality of the majority religion and that they were directly created against an unpopular minority religion against the 1st Amendment.
That you:
A. Didn't know the history of your own religion or how that particular moral rule became part of it.
B. Didn't know the history behind the persecution of the LDS church and why the laws against plural marriages became a point of federal "recognition".
Doesn't change what I have shown in this thread.
Laws to support what you call "moral" solely because it is "moral" are not the purview of the government, only radicals would believe that they are supposed to enforce any form of morality on people, let alone one that follows the majority religion's specific code, certainly not "conservatives".
Before making any law, the government should always ask first "Where is the direct victim?" Since you cannot provide even close to a direct victim in this case and never have been able to, this is one that the government should stay the heck out of...