"INDIAN WELLS, Calif. – The Koch brothers’ donor network spent close to $400 million last year, and is on its way to spending an unprecedented $889 million supporting right-wing politics and causes during the 2016 cycle.
 
On Saturday afternoon, the Koch network assembled 500 wealthy conservatives — its largest gathering ever — at a luxury resort near the foothills of Palm Springs’ Coachella Valley.

About 150 of the donors are first-time attendees, and the rest are paid-up members of the conservative donor network, which requires a minimum annual membership fee of $100,000."

Jonathan Swan reports for The Hill January 30, 2016. [2]