The state gov't in Oregon made the Cards channel illegal, either at the beginning or end of January 2011. As far as I know, this has had zero effect on sites/players. The few players that had switched over from trivia to cards just switched back. I don't believe any sites in the state have dropped the game since.
At the one place in Oregon where I know the cards had become highly popular, many players had stopped doing trivia altogether (except maybe for Tues. games). When the cards stopped, most of 'em just started playing trivia regularly again.
Even the BWW's, where the cards always seemed to get more attention than the trivia, are the same loud, crowded, noisy, overpriced, crappy places they've always been
I don't understand the attraction to these places at all, but that's a rant for another thread
Interesting side affect to the banning of the cards channel (and much more so the online poker gaming places), LOTS of poker halls with live games (set up as "gaming tournaments" with entry fees and prizes so the law stays away) have opened up all over the Portland area in the months since... Not nearly as many as there are "gentleman's clubs" around here, but quite a few of 'em.