Let me say that I agree with everything my colleague has said.
Let me just add something on the question of whether this should be referred to the Supreme Court. That, of course, is not a democratic measure, but it gets an authoritative ruling on the constitutional law. My view is that the constitutionality of the bill is sufficiently clear that the step isn't really necessary. But if one believed that the constitutionality of the bill was reasonably uncertain, it would be a sensible step to make a reference to the Supreme Court and get a ruling straight away as to whether this could be done.