TCG – PBA responded to your question to me quite well. I will add that polygamy is less problematic than toeiva marriage, and has been practiced for thousands of years (as well as being legal m’ikur hadin.)
Agreed. I’ll just say that the government should not be able to tell any two consenting adults what they can or can not do behind closed doors. If the government feels the need to certify that relationship (for some strange reason), they should do so for everyone.