Thank you for the question.
The driver behind the submission presented today is the reality of the constitutional constraints in which this debate is happening. It's a premise of Professor Hogg's submission—and I have the utmost respect for Professor Hogg and his scholarship—that the federal Parliament could enact a comprehensive regulatory scheme through the exercise of its criminal law power. It is my submission that to do so would miscast the issue and would be vulnerable to constitutional challenge as an excess of the criminal law authority.
I think, architecturally, Professor Hogg's recommendation has an elegance to it, but I submit it is problematic, from a standpoint of constitutional competence, to commit to that framework. I, however, urged a framework that I say is more likely to withstand constitutional scrutiny and yet be workable. It may come at the cost of some unevenness; I think that has to be recognized. But whatever model is adopted does need to be capable of withstanding constitutional scrutiny.