An adult man can't marry a 14 year old in Canada right now, you need a system like Bountiful to do it and that has been made illegal. It can no longer be gussied up as freedom of religon to marry 14 year olds. This was a good decision.
Yes he can with the parents consent. That is the catch to places like Bountiful, the men are all in it together. Women have no say in much of anything. They simply breed daughters for each other.