Bismillah: Assalamo Alikum...
1- It is against the law to marry more than one wife in the States, <b>but there is no any law of punishment if you commit adultery</b> !!!
2- changing scriptures is something that has been done and still going on up to this day, but no one actually can prove whether the altered words are to be found in the original scriptures or not, <b>simply because the "Original" do not exist today</b>.
Salam
Wael.