Professional Poker Player?
Howard Lederer, a.k.a. "the Professor," is a professional poker player, not a gambler. If Congress will acknowledge this distinction, it will rectify one of its recent mistakes.
Howard used to be a professional poker player. He was also a bookie for a time. And was a gambler, gambling on poker, sports, chess, and probably other games as well.
More recently he's an owner of FullTilt and although he plays poker he probably makes more on celebrity appearance fees and TV production fees than poker winnings.
I'm not sure that means he's still a professional poker player.