Turns out that George Bush, "within days of the Sept. 11, 2001, attacks at the World Trade Center and the Pentagon," signed a directive permitting the "transfer [of] suspected terrorists to foreign countries for interrogation." We know what that means: it means transferring people to countries with, as the economists might say, comparative advantage in torture. The details here.
If you want details on what these "rendition" victims faced on the other side of their plane ride, read this New Yorker piece. I reported on this topic earlier, here and here.