In Supreme Court news, oral arguments began Tuesday in a case that will decide whether the Bush administration can use military tribunals to try detainees at the Guantanamo Bay military prison. Salim Ahmed Hamdan, who worked as Osama bin Laden’s driver in Afghanistan, is challenging the tribunals. Supreme Court Justice Antonin Scalia took part in Tuesday’s hearing despite growing calls for his recusal. In a recent speech, Scalia dismissed the idea detainees have rights under the U.S. Constitution or international conventions.