“There are many cases of people with guns choosing to kill someone and failing to do so.”

"That's not the point. The point is this. People innately can make choices and have opinions. No one thing or government can stop that person from thinking things. But a person doesn't innately own a gun. They own a gun because they obtained a gun from someone else. If we stop people from obtaining guns altogether, we take away the choice of that person killing someone with a gun. "