Yes. I think the rule of law requires, especially where the legislature speaks and does constrain the power of the executive, especially in times of crisis, that the executive adhere to those constraints imposed by the legislature.
I think the Emergencies Act has incredible amounts of discretion for the executive, and that would be how anyone would interpret it: whether or not they had reasonable grounds to believe a threat to the security of Canada existed and then whether it was necessary. They have incredible amounts of discretion there, but when Parliament has chosen to be very narrow—in this case, in its use and the definition of threats to the security of Canada—it's important that be respected because it was a deliberate choice, and the rule of law is the backbone of what makes us a liberal democracy that thrives on the rule of law.