"We know of no other enumerated constitutional right whose core protection has been subjected to a freestanding 'interest-balancing' approach. The very enumeration of the right takes out of the hands of government—even the Third Branch of Government—the power to decide on a case-by-case basis whether the right is really worth insisting upon. A constitutional guarantee subject to future judges’ assessments of its usefulness is no constitutional guarantee at all. Constitutional rights are enshrined with the scope they were understood to have when the people adopted them, whether or not future legislatures or (yes) even future judges think that scope too broad.
"In any event, the meaning of “bear arms” that petitioners and JUSTICE STEVENS propose is not even the (sometimes) idiomatic meaning. Rather, they manufacture a hybrid definition, whereby “bear arms” connotes the actual carrying of arms (and therefore is not really an idiom) but only in the service of an organized militia. No dictionary has ever adopted that definition, and we have been apprised of no source that indicates that it carried that meaning at the time of the founding. But it is easy to see why petitioners and the dissent are driven to the hybrid definition. Giving “bear Arms” its idiomatic meaning would cause the protected right to consist of the right to be a soldier or to wage war—an absurdity that no commentator has ever endorsed. See L. Levy, Origins of the Bill of Rights 135 (1999). Worse still, the phrase “keep and bear Arms” would be incoherent. The word “Arms” would have two different meanings at once: “weapons” (as the object of “keep”) and (as the object of “bear”) one-half of an idiom. It would be rather like saying “He filled and kicked the bucket” to mean “He filled the bucket and died.” Grotesque."