I hasten to note that Fundamentalist Muslims will quickly seize on this to provide support for their arguments. It will start in Canada. See here for the details :
http://www.freerepublic.com/focus/f-news/1557721/posts
and here :
http://www.freerepublic.com/focus/f-news/1557105/posts
Since Sharia law is now recognized in Canada, I can't find a reason why Polygamy should be outlawed there. If it gets legalized there, it could simply be a matter of time before the same arguments come into these United States.
Polygamy is not outlawed in the Bible. Ashkenazi (European) Jews outlawed polygamy about 1000 years ago, by rabbinical decree.
Sephardi (Middle-Eastern) Jews who lived in Muslim lands continued to observe polygamy up until about 60 years ago. It is prohibited by Israeli secular law, although polygamous families who immigrated from Muslim lands were allowed to stay together.