How is Polygamy a moral issue in Kenya?

The practice of what is usually called polygamy enjoys de facto legality in Kenya although such unions are no longer fully recognized by the courts. With the enactment of the new constitution, the Marriage Bill of 2007, which would have effectively legalize civil polygamous marriage in Kenya. However in 2013, a woman was able to marry two men legally. (Moral issues: are those which involve a difference of belief and not a matter of preference.)

Many people especially those who are not used to or don't believe in marrying two people would find this an moral issue. Whether it is because of their religion or that you believe marrying multiple people is wrong, its simply an opinion. I think your question is very opinionated, because whether polygamy is or isn't an moral issue is based on how you feel about it.