Oh no, my dear, it's not that easy. You see, a person buying a gun is, by definition, declaring an intention to use it. So the gun - which is an object - is registered in case this intention involves breaking the law. A mutant, on the other hand, does not choose to be born in such a manner, and their intentions don't enter into it.

[He smiles blithely, apparently unaware of the amount of anger facing him down. Anger is a reaction he is fairly used to, specifically because he's an infuriating little shit, and he's proud of it.]

Besides which, the least deadly thing about me is my mutation. As a normal human being, I can break your neck in at least seven different ways. As a mutant, I can save your life after doing so. So should I be registered simply for having been trained to kill people in perfectly mundane ways - and where do you draw that line? Am I a weapon? [Some deceptive calm there.]