Zeroisanumber posted:

Because the penalty for treason is death, or life in a box. Aldrich Ames and Robert Hanssen aren't likely to cause much harm either, but neither of them are ever going to see the light of day.

This is exacerbated by the fact that the Israeli right holds Pollard in such high regard that for a while they made pilgrimages to his cell, hired him the same lawyer that the guy who killed Rabin used, and accused us of anti-Semitism for keeping him in jail.