Amos,

One problem with bringing said terrorists to trial is that the sources of information that indicate they ARE terrorists would be comprimised by the trial- and future information about terrorist acts would then not be available, ( in addition to endangering what few humint assets we have, by exposing them to the enemy).

It is quite likely that a number of the prisoners are known to be guilty of crimes, but cannot be tried without grave damage to the US ( re humint assets)