Super-secretive, well-guarded rooms at a Koch brothers’ billionaires retreat–this is where the Republican agenda is being hatched these days.

Last weekend, the Kochs and their wealthiest friends rented out an entire luxury resort complex in Laguna Beach. Because where else are you supposed to hold your brainstorming session on how to best spend hundreds of millions of dollars to buy elections?

But as detailed by The Nation, it wasn’t just dark money donors palling around at the conference. Guess who else made an appearance? Senate Minority Leader Mitch McConnell, presidential hopeful Marco Rubio, key Senate candidates, Cory Gardner and Tom Cotton, and influential conservative congressman, Jim Jordan.

There is much ado these days about the jockeying for power between the Tea Party and the Republican establishment. But the reality is, in today’s GOP, the Koch brothers are the ones calling the shots.