In a divided ruling last Friday, the federal appeals court in Washington threw out the military commission conviction of a Guantánamo detainee, Ali Hamza Ahmad Suliman al Bahlul, holding that the Constitution forbids the use of irregular war courts to try purely domestic offenses like “conspiracy.” Nothing in last week’s decision prevents the government from trying the exact same charges (and same defendants) in civilian courts. Instead, the real impact of the decision is to drive home how misconceived the Guantánamo military commissions have been from the get-go, and how little they now stand to accomplish.
President George W. Bush created the Guantánamo military commissions back in 2001 with the goal of using such tribunals as a more efficient, more secure, and more secret forum for prosecuting terrorism suspects. Civil liberties groups and legal scholars objected, arguing that the ordinary civilian courts were perfectly capable of handling even the highest-profile terrorism cases. But the government defended such trials by relying upon precedents from World War II, when hundreds of U.S. military commissions tried thousands of enemy belligerents for war crimes, trials that were upheld by the Supreme Court.
All of those precedents, though, involved recognized violations of the international laws of war—such as deliberately attacking civilian targets, or mistreating prisoners of war. Although a handful of the Guantánamo detainees, like the 9/11 defendants, could be similarly tied to international war crimes, the government charged other detainees on theories of “inchoate” liability as reflected in offenses like conspiracy, and “providing material support,” which only requires proof that the defendant indirectly contributed to al-Qaeda, and not that he was in any way directly responsible for specific and well-established war crimes.
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The problem with these charges is easy to describe: They’re crimes, but they’re not war crimes—they describe conduct that Congress can criminalize (as it did in the days after 9/11), but the constitutional rule we have always followed is that such domestic law crimes must be tried by civilian courts, with juries and the nonmilitary judges who are the guarantors of our constitutional protections. Military tribunals, by contrast, must be reserved for trying our own soldiers, or for trying especially heinous offenses that violate international laws recognized the world over.








