That consequence would be tolerable if necessary to preserve a time-honored legal principle vital to our constitutional Republic. But it is this Court’s blatant abandonment of such a principle that produces the decision today. The President relied on our settled precedent in Johnson v. Eisentrager, 339 U. S. 763 (1950), when he established the prison at Guantanamo Bay for enemy aliens. Citing that case, the President’s Office of Legal Counsel advised him “that the great weight of legal authority indicates that a federal district court could not properly exercise habeas jurisdiction over an alien detained at [Guantanamo Bay].” Memorandum from Patrick F. Philbin and John C. Yoo, Deputy Assistant Attorneys General, Office of Legal Counsel, to William J. Haynes II, General Counsel, Dept. of Defense (Dec. 28, 2001). Had the law been otherwise, the military surely would not have transported prisoners there, but would have kept them in Afghanistan, transferred them to another of our foreign military bases, or turned them over to allies for detention. Those other facilities might well have been worse for the detainees themselves.

In the long term, then, the Court’s decision today accomplishes little, except perhaps to reduce the well-being of enemy combatants that the Court ostensibly seeks to protect. In the short term, however, the decision is devastating. At least 30 of those prisoners hitherto released from Guantanamo Bay have returned to the battlefield....

As I will show below, manipulation is what is afoot here.....

I guess I got lucky this am when my first sense of this decision was, “isn’t it kind of arrogant to try to apply our Constitution to citizens of other countries who’ve never set foot here?” Justice Scalia seems to think so, too [If I read him correctly][see Part III].

It is entirely clear that, at English common law, the writ of habeas corpus did not extend beyond the sovereign territory of the Crown.

...But prerogative writs could not issue to foreign countries, even for British subjects; they were confined to the King’s dominions--those areas over which the Crown was sovereign.  ...Thus, the writ has never extended to Scotland, which, although united to England when James I succeeded to the English throne in 1603, was considered a foreign dominion under a different Crown--that of the King of Scotland.  ...That is why Lord Mansfield wrote that “[t]o foreign dominions, which belong to a prince who succeeds to the throne of England, this Court has no power to send any writ of any kind. We cannot send a habeas corpus to Scotland . . . .”

I hardly think Saddam or the Taliban qualifiy as successor to POTUS.  ...yet.

...Today the Court warps our Constitution in a way that goes beyond the narrow issue of the reach of the Suspension Clause, invoking judicially brainstormed separation-of-powers principles to establish a manipulable “functional” test for the extraterritorial reach of habeas corpus (and, no doubt, for the extraterritorial reach of other constitutional protections as well). It blatantly misdescribes important precedents, most conspicuously Justice Jackson’s opinion for the Court in Johnson v. Eisentrager. It breaks a chain of precedent as old as the common law that prohibits judicial inquiry into detentions of aliens abroad absent statutory authorization. And, most tragically, it sets our military commanders the impossible task of proving to a civilian court, under whatever standards this Court devises in the future, that evidence supports the confinement of each and every enemy prisoner.

The Nation will live to regret what the Court has done today. I dissent.

Chief Justice Roberts:

Today the Court strikes down as inadequate the most generous set of procedural protections ever afforded aliens detained by this country as enemy combatants. The political branches crafted these procedures amidst an ongoing military conflict, after much careful investigation and thorough debate. The Court rejects them today out of hand, without bothering to say what due process rights the detainees possess, without explaining how the statute fails to vindicate those rights, and before a single petitioner has even attempted to avail himself of the law’s operation. And to what effect? The majority merely replaces a review system designed by the people’s representatives with a set of shapeless procedures to be defined by federal courts at some future date. One cannot help but think, after surveying the modest practical results of the majority’s ambitious opinion, that this decision is not really about the detainees at all, but about control of federal policy regarding enemy combatants.

...So who has won? Not the detainees. The Court’s analysis leaves them with only the prospect of further litigation to determine the content of their new habeas right, followed by further litigation to resolve their particular cases, followed by further litigation before the D. C. Circuit--where they could have started had they invoked the DTA procedure. Not Congress, whose attempt to “determine--through democratic means--how best” to balance the security of the American people with the detainees’ liberty interests, see Hamdan v. Rumsfeld, 548 U. S. 557, 636 (2006) (Breyer, J., concurring), has been unceremoniously brushed aside. Not the Great Writ, whose majesty is hardly enhanced by its extension to a jurisdictionally quirky outpost, with no tangible benefit to anyone. Not the rule of law, unless by that is meant the rule of lawyers, who will now arguably have a greater role than military and intelligence officials in shaping policy for alien enemy combatants. And certainly not the American people, who today lose a bit more control over the conduct of this Nation’s foreign policy to unelected, politically unaccountable judges.

I respectfully dissent.