From a purely technical and legal standpoint, I think that the bill before you for consideration is an attempt at covering everything that comes under the authority of the Parliament of Canada. That's the technical answer that I can give you.
The limits are constitutional limits. So it's not something we can change or that the government could change. When you say constitutional limit, you're talking about the division of powers between the Parliament of Canada and the provincial legislatures. Some powers fall to the Parliament of Canada, others to the provinces. That's what we're talking about.
I think that, if you examine subsection 10.2(1) of the bill before you, you'll see that we're trying to cover everything that is possible for the Parliament of Canada to cover under its constitutional authority in respect of aeronautics.