A court case to determine whether Canada's polygamy laws violate religious protection might have been sparked by a fundamentalist Mormon sect in southeastern British Columbia, but the legal challenge will also examine rarely discussed polygamous practices among North America's Muslims.
Interesting to note that there is wide agreement among experts that women in polygamous marriages “had greater frequency and severity of a variety of psychiatric symptoms, decreased marital satisfaction, and lower self-esteem.” and that “more often than not, the practice is a harmful one.”
As one might expect, and certainly from the records of early Mormon polygamy, it is usually about power and the attitude of men towards their wives in this arrangement is abusive.
Court case won't just look at Mormon polygamists; Muslims under scrunity too - Winnipeg Free Press