I have a point of order.
Just for our clarification, I'm pleased that Monsieur Mulcair is joining the debate, but it's been my understanding when we've dealt with this in committees in the past that you couldn't replace a regular member of the committee if that member of the committee was still in the room. If he had to leave the room to go to another committee or to vote, then he would have a replacement, but not while he was present.