At a private three-day retreat in California last weekend, conservative billionaires Charles and David Koch and about 250 to 300 other individuals pledged approximately $100 million to defeat President Obama in the 2012 elections.

A source who was in the room when the pledges were made told The Huffington Post that, specifically, Charles Koch pledged $40 million and David pledged $20 million.

The semi-annual, invitation-only meeting attracts wealthy donors, Republican politicians and conservative activists. Last year, hundreds of activists gathered outside the walled-off resort to protest the meeting. This year, however, the conference went off quietly.

“Conference organizers and their guests successfully slipped in and out of the Coachella Valley without being detected, by buying out nearly all of the 500-plus rooms at the Renaissance Esmeralda resort in Indian Wells,” reported The Desert Sun. “The resort closed its restaurants, locked down the grounds with private security guards and sent many workers home.”

David Hamilton Koch ( /ˈkoʊk/; born May 3, 1940) is an American businessman, philanthropist, political activist, and chemical engineer. He is a co-owner (with older brother Charles) and an executive vice president of Koch Industries, a conglomerate that is the second-largest privately held company in the U.S.^[7] Koch is the second-richest resident of New York City as of 2010.^[3][4]

He is a major patron of the arts and a funder of conservative and libertarian political causes, including some organizations that fund some organizations within the American Tea Party movement.^[3][8] Among other charities, he has contributed to Lincoln Center, Sloan Kettering, a fertility clinic at New York-Presbyterian Hospital and the American Museum of Natural History‘s David H. Koch Dinosaur Wing.^[9] The New York State Theater at Lincoln Center, home of the New York City Opera and New York City Ballet was renamed the David H. Koch Theater in 2008 following a gift of 100 million dollars for the renovation of the theater. Condé Nast Portfolio described him as “one of the most generous but low-key philanthropists in America”.^[10]

see

https://en.wikipedia.org/wiki/David_H._Koch

and

Is Your Senator Representing Charles and David Koch?

http://www.huffingtonpost.com/robert-greenwald/is-your-senator-represent_b_1205692.html