That hostile takeover maneuvers very much like a fifth column, operating in a highly calculated fashion, more akin to an occupying force than to an open group engaged in the usual give-and-take of politics. The size of this force is enormous. The social scientists who have led scholars in researching the Koch network write that it “operates on the scale of a national U.S. political party” and employs more than three times as many people as the Republican committees had on their payrolls in 2015.

