Edited sentence: Koch Industries was by far the largest campaign donor to Pompeo, giving $31,400 through KOCHPAC, and at least $79,500 total.On August 28, 2009, Pompeo spoke at a large Tea Party rally organized by Americans for Prosperity, denouncing what he derisively called, and has come to be known as "Obamacare", and signed a pledge sponsored by Americans for Prosperity to ignore or downplay the purported dangers of climate change.Pompeo supported and spoke on behalf of Americans for Prosperity (AFP), a Tea Party group created and funded by David Koch.was heavily supported by Koch Industries’ PAC, which allowed him to win his Republican primary