The new law is, above all, a stinging rebuke to the Supreme Court. It strips the courts of jurisdiction to hear any habeas corpus claim filed by any alien enemy combatant anywhere in the world. It was passed in response to the effort by a five-justice majority in Hamdan v. Rumsfeld to take control over terrorism policy. That majority extended judicial review to Guantanamo Bay, threw the Bush military commissions into doubt, and tried to extend the protections of Common Article 3 of the Geneva Conventions to al Qaeda and Taliban detainees, overturning the traditional understanding that Geneva does not cover terrorists, who are not signatories nor "combatants" in an internal civil war under Article 3.
Hamdan was an unprecedented attempt by the court to rewrite the law of war and intrude into war policy. . .
Until the Supreme Court began trying to make war policy, the writ of habeas corpus had never been understood to benefit enemy prisoners in war. The U.S. held millions of POWs during World War II, with none permitted to use our civilian courts (except for a few cases of U.S. citizens captured fighting for the Axis). . .
(emphasis in underline supplied)