We would have to see just how far we can go. I have no specific ideas on that. To be frank, however, it could not, as I see it, have the effect of emasculating the prerogative or removing its discretionary nature.
If I say to you that you have the prerogative of deciding who, in this room, will have the right to leave, I presume that I am giving you some discretion.
The term “prerogative” implies a discretion, in my view. If there is no discretion there is no prerogative. If the prerogative is constitutionally protected, it means that this discretion is constitutionally protected. If it is, then a law from this Parliament could not limit that discretion.