This is really a question of drafting. If you try to define “friend”, you're automatically limited. Is this a friend or not? People will try to decide whether they fall under or out of the definition. If you just put “friend” and give the discretion to the commissioner to decide it, then if need be, it can go further to the courts in terms of a judicial review.
You set out the concept and you hope that in the administration of the act, it becomes clarified. That's usually how we do it in Canada.
The U.S. does exactly the opposite. It will define it extremely narrowly—