Yes, I am aware of that fact. I'm also aware that, certainly just a few years ago, therapists from the United States were travelling to Canada to do their routine there.
When you're asking how they can take the child, say, if they're going from Canada to the U.S., the question is this: Who is going to complain? If the other parent complains, that parent is going to be found in contempt of court. They're attempting to counter the orders of the judge. They have been told not to talk about this, but they are talking about it, and, therefore, they're going to be in contempt, and money fines or even imprisonment may follow that.