>> tonight on "q&a," sheelah kolhatkar talks about the inside trading case against hedge fund cohenr stephen -- steven ge: insidek "black ed information, dirty money, and the quest to bring down the most wanted man on wall street." >> the central characters are these two a former portfolio managers for cohen's fund. is currently serving a fairly lengthy prison sentence, though his cases on appeal. mr. steinberg was convicted, but it was later overturned. after an appeals court made a ruling that made it much harder to convict someone for insider adg. >> tonight at 8:00 p.m. eastern on c-span's "q&a." u.s.w, a discussion on immigration policy. this is from friday's biannual summit hosted by the national review institute. it is just over 45 minutes.