A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.
In a 5-4 decision authored by Justice Scalia (PDF, link fixed), the Supreme Court today determined that the Second Amendment protects an individual's right to bear arms, even though no one's entirely sure what the text of the Second Amendment is:
There seems to us no doubt, on the basis of both text and history, that the Second Amendment conferred an individual right to keep and bear arms. Of course the right was not unlimited, just as the First Amendment’s right of free speech was not. Thus, we do not read the Second Amendment to protect the right of citizens to carry arms for any sort of confrontation, just as we do not read the First Amendment to protect the right of citizens to speak for any purpose.
From Blackstone through the 19th-century cases, commentators and courts routinely explained that the right was not a right to keep and carry any weapon whatsoever in any manner whatsoever and for whatever purpose. For example, the majority of the 19th-century courts to consider the question held that prohibitions on carrying concealed weapons were lawful under the Second Amendment or state analogues. Although we do not undertake an exhaustive historical analysis today of the full scope of the Second Amendment, nothing in our opinion should be taken to cast doubt on longstanding prohibitions on the possession of firearms by felons and the mentally ill, or laws forbidding the carrying of firearms in sensitive places such as schools and government buildings, or laws imposing conditions and qualifications on the commercial sale of arms. We also recognize another important limitation on the right to keep and carry arms. Miller said, as we have explained, that the sorts of weapons protected were those "in common use at the time." We think that limitation is fairly supported by the historical tradition of prohibiting the carrying of "dangerous and unusual weapons
It may be objected that if weapons that are most useful in military service—M-16 rifles and the like—may be banned, then the Second Amendment right is completely detached from the prefatory clause. But as we have said, the conception of the militia at the time of the Second Amendment’s ratification was the body of all citizens capable of military service, who would bring the sorts of lawful weapons that they possessed at home to militia duty. It may well be true today that a militia, to be as effective as militias in the 18th century, would require sophisticated arms that are highly unusual in society at large. Indeed, it may be true that no amount of small arms could be useful against modern-day bombers tanks. But the fact that modern developments have limited the degree of fit between the prefatory clause and the protected right cannot change our interpretation of the right.
And, as such, there goes DC's ban on owning handguns:
It is no answer to say, as petitioners do, that it is permissible to ban the possession of handguns so long as the possession of other firearms (i.e., long guns) is allowed. It is enough to note, as we have observed, that the American people have considered the handgun to be the quintessential self-defense weapon. There are many reasons that a citizen may prefer a handgun for home defense: It is easier to store in a location that is readily accessible in an emergency; it cannot easily be redirected or wrestled away by an attacker; it is easier to use for those without the upperbody strength to lift and aim a long gun; it can be pointed at a burglar with one hand while the other hand dials the police. Whatever the reason, handguns are the most popular weapon chosen by Americans for self-defense in the home, and a complete prohibition of their use is invalid.
So, too, did the Court strike down DC's trigger lock requirements, though the majority declined to specify what sort of test could apply to restrictions to gun ownership in future cases. Basically, Justice Scalia writes, this is our first Second Amendment case we've really done. Give us time. He concludes:
We are aware of the problem of handgun violence in this country, and we take seriously the concerns raised by the many amici who believe that prohibition of handgun ownership is a solution. The Constitution leaves the District of Columbia a variety of tools for combating that problem, including some measures regulating handguns. But the enshrinement of constitutional rights necessarily takes certain policy choices off the table. These include the absolute prohibition of handguns held and used for self-defense in the home. Undoubtedly some think that the Second Amendment is outmoded in a society where our standing army is the pride of our Nation, where well-trained police forces provide personal security, and where gun violence is a serious problem. That is perhaps debatable, but what is not debatable is that it is not the role of this Court to pronounce the Second Amendment extinct.
Justice Stevens, dissenting, argues for judicial restraint, and believes that the Founders intended to leave gun control options on the table for legislatures:
Until today, it has been understood that legislatures may regulate the civilian use and misuse of firearms so long as they do not interfere with the preservation of a well-regulated militia. The Court’s announcement of a new constitutional right to own and use firearms for private purposes upsets that settled understanding, but leaves for future cases the formidable task of defining the scope of permissible regulations. Today judicial craftsmen have confidently asserted that a policy choice that denies a "law-abiding, responsible citize[n]" the right to keep and use weapons in the home for self-defense is "off the table." Given the presumption that most citizens are law abiding, and the reality that the need to defend oneself may suddenly arise in a host of locations outside the home, I fear that the District’s policy choice may well be just the first of an unknown number of dominoes to be knocked off the table.
... The Court properly disclaims any interest in evaluating the wisdom of the specific policy choice challenged in this case, but it fails to pay heed to a far more important policy choice -- the choice made by the Framers themselves. The Court would have us believe that over 200 years ago, the Framers made a choice to limit the tools available to elected officials wishing to regulate civilian uses of weapons, and to authorize this Court to use the common-law process of case-by-case judicial lawmaking to define the contours of acceptable gun control policy. Absent compelling evidence that is nowhere to be found in the Court’s opinion, I could not possibly conclude that the Framers made such a choice.
Justice Breyer, dissenting, makes something of a federalist argument, focusing on DC's evaluation of its own local problem:
I here assume that one objective (but, as the majority concedes, not the primary objective) of those who wrote the Second Amendment was to help assure citizens that they would have arms available for purposes of self-defense. Even so, a legislature could reasonably conclude that the law will advance goals of great public importance, namely, saving lives, preventing injury, and reducing crime. The law is tailored to the urban crime problem in that it is local in scope and thus affects only a geographic area both limited in size and entirely urban; the law concerns handguns, which are specially linked to urban gun deaths and injuries, and which are the overwhelmingly favorite weapon of armed criminals; and at the same time, the law imposes a burden upon gun owners that seems proportionately no greater than restrictions in existence at the time the Second Amendment was adopted.
[T]he majority’s decision threatens severely to limit the ability of more knowledgeable, democratically elected officials to deal with gun-related problems. The majority says that it leaves the District "a variety of tools for combating" such problems. It fails to list even one seemingly adequate replacement for the law it strikes down. I can understand how reasonable individuals can disagree about the merits of strict gun control as a crime-control measure, even in a totally urbanized area. But I cannot understand how one can take from the elected branches of government the right to decide whether to insist upon a handgun-free urban populace in a city now facing a serious crime problem and which, in the future, could well face environmental or other emergencies that threaten the breakdown of law and order.
Both sides of the case read much more like a history lesson than an analysis of prior case law, and I'll get to the dissents in more detail as soon as I have time.
I encourage you to read this fully before rendering your opinions, because, well, it's a Constitution we're expounding here, and this comes up in other contexts as well. Sometimes in life (and in law), there are things that we might desire from a policy standpoint -- like certain forms of gun control, or restrictions on some election-related speech -- which are nevertheless forbidden by the Constitution. And as liberals -- unlike the other guys -- we ought not try to pretend that the Constitution doesn't exist when it gets in the way of our policy preferences.
edited to add: Via Slate's Dahlia Lithwick, this may leave a mark:
I must first pass along this rather brilliant observation from professor Stephen Wermiel from American University, who wonders why none of the dissenters cautioned the majority that today's decision "will almost certainly cause more Americans to be killed." (Boumediene, Scalia, J. dissenting.)