That quote from Cheney staff director David Addington, as reported in a new book detailing administration terrorism policies. The WaPo also says:
The classified CIA report described by Mayer was prepared in the summer of 2002 by a senior CIA analyst who was invited to the prison camp in Cuba to help Defense Department officials grapple with a major problem: They were gleaning very little useful information from the roughly 600 detainees in custody at the time. After a study involving dozens of detainees, the analyst came up with an answer: A large fraction of them “had no connection with terrorism whatsoever,” Mayer writes, citing officials familiar with the report. Many were essentially bystanders who had been swept up in dragnets or turned over to the U.S. military by bounty hunters.
And that’s one of the conservative estimates.
Guantanamo is a carefully crafted loophole in the constitutional limits on presidential power, and a carefully crafted exercise in managing public perception. It is a national dungeon, where the President’s determination of guilt is the only rule. The law upholds it because it must, the congress accepts it because it’s too politically easy to ignore it, and the public accepts it because it seems just far enough away to be less important than the numbers on the gas station marquee.