Lawyers for dozens of Guantanamo Bay -detainees asked a federal appeals court Wednesday to declare a key part of President Bush's new military trials law unconstitutional.

The detainees' lawyers challenged the military's authority to arrest people overseas and detain them indefinitely without allowing them to use the U.S. courts to contest their detention.

Bush gave the military that authority last month when he signed a new law that sets up special commissions to hold trials for foreigners designated as "enemy combatants." Bush hailed the law as a crucial tool in the war on terrorism and said it would allow prosecution of several high-level terror suspects.

In written arguments, attorneys for more than 100 detainees who would be locked out of the regular judicial system asked the U.S. Court of Appeals for the District of Columbia Circuit to let the detainees keep their legal challenges going in civilian courts.

The framers of the Constitution never would have permitted the government to hold people indefinitely without charges, the lawyers wrote.

"Persons imprisoned without charge must retain the right to obtain a court inquiry into the factual and legal bases for their imprisonment," they wrote.

This argument echoes a Supreme Court ruling in June in which the justices ruled that the Bush administration's system for trying enemy combatants violated U.S. and international law. Within weeks, the president persuaded Congress to pass a new law setting up military commissions and barring detainees from using the civilian court system.

Shortly after the new law was signed, the Justice Department told hundreds of detainees that their cases in the U.S. courts had been rendered moot.

On Wednesday, seven retired federal judges from both political parties filed legal briefs in the detainees case before the Washington appeals court, arguing that the military commissions law would allow authorities to use evidence obtained by torture.

Although the law prohibits torture, the judges said the military has not addressed torture claims made by detainees. The retired judges also argued that the new law illegally strips courts of the power to question military decisions about the detainees' torture claims.

The Justice Department has until Nov. 13 to respond to the detainees claims.