http://thinkprogress.org/climate/2014/12/05/3599846/getting-turned-away-from-the-alec-conference/
"ALEC, which does not publish a full list of all dues-paying members, includes some 2,000 state legislators, corporate executives, and lobbyists. Many of the state legislators have gone on to become members of Congress. It is also well-documented that most of ALEC’s revenue comes from corporations and corporate foundations, including those associated with petrochemical billionaires Charles and David Koch, rather than legislative dues."
