The Pentagon and the CIA have asked the White House to decide on a more permanent approach for those it is unwilling to set free or turn over to US or foreign courts, the Washington Post said in a report that cited intelligence, defence and diplomatic officials.

See:
http://english.aljazeera.net/NR/exeres/E52FA141-5DE8-4BEB-AC08-D7CCAB6583A0.htm.

Meanwhile Daniel Pipes has been recommending the internment of Muslims:
http://kurtnimmo.com/blog/index.php?p=479.

As an example of what they have in mind, the story of Moazzam Begg (the British citizen who was kidnapped in Pakistan and taken to Afghanistan and then Guantanamo Bay) is in this Observer article.