In today's Senate debate about FISA, Senator Specter pointed out that most members of Congress do not even know what the program was, but still are being asked to grant immunity. Senator Rockefeller responded by reading his own tote list of how many senators were briefed on the secret program: 37 members of the Senate.
Specter responded that his figures for the House are: 95 members in the House were briefed. He went on to argue that these figures still show that a majority in both houses were ignorant about the program.
But I think the more important point is that the key leadership of both parties in both houses knew all along, and are protecting their own asses with the immunity bill.
For those who want to see this part of the debate, it occurs on C-SPAN2starting at 16:55:54 for Rockefeller and 16:56:46 for Specter.
Be aware that the C-Span database is generally unavailable in the evening.