US conservative force David Koch steps down from business and political empire due to failing health
The Koch brothers run a vast empire of organisations that is rivalled by only the Republican Party in terms of influence in right-wing politics

David Koch, one of the two billionaire brothers at the helm of the powerful conservative political network in the US, is retiring from his family’s conglomerate, Koch Industries, and stepping down as chairman of the Americans for Prosperity Foundation.
His brother, Charles Koch, announced in a letter to Koch Industries employees on Tuesday that David Koch’s health had been in decline since he was hospitalised last summer. He was not specific about the illness.
“Unfortunately, these issues have not been resolved and his health has continued to deteriorate,” Charles Koch wrote. “As a result, he is unable to be involved in business and other organisational activities.”
The departure of David Koch, 78, will change the make-up of one of the most active and well-funded political forces in the country that has been a bulwark in not just supporting but setting the Republican agenda – although not necessarily US President Donald Trump’s.

Mark Holden, who has spent a career at Koch Industries and now helps run their political efforts, said the Koch network would continue to expand even as one of its founders steps aside.
“We greatly appreciate his vital role on the board and all that he has done to help us build a strong foundation for our future success,” Holden said.