“Rep. Dan Crenshaw (R-TX) owes his defeat in this week’s Republican primary to a billionaire megadonor who was hellbent on ending Crenshaw’s career,” Axios reports.“Texas banker Robert Marling’s role in funding an anti-Crenshaw advertising blitz starkly illustrates how a lone billionaire can banish a member of Congress.”“Sources close to Marling say it started several years ago, when he invited Crenshaw to appear at an annual conservative youth summit. Crenshaw said he would speak only if audience members wore masks, so the story goes, and Marling said no.”