So we learn from Politico's Josh Gerstein, who filed this report yesterday.
Here's how Gerstein's piece begins:
The U.S. Government has for the first time issued a public list of Guantanamo prisoners cleared for release or transfer, but who remain at the island prison because of difficulties finding a country willing to take them or because of concerns about sending them to their home countries.
The list (posted here) was filed in a series of federal court cases Friday morning and includes the names and serial numbers of 55 detainees. That's almost exactly one-third of the 167 men currently imprisoned at Guantanamo Bay.