Any Christian people can move to a place where there is no law against more than one wife, and marry more.
There are only few places where polygamy is accepted. Good luck 
.Just remember. People that do this will have more trouble in their lives than one-to-one.
Indeed so I don't think any good reason for you to do this. Besides if you are really a true Christian or a committed person on whatever religion (aside from Islam since they're allowed to have more than one wife) you belongs, you will not do it in the first place because you know that it was strictly prohibited.