Sen. Joni Ernst on former EPA Chief Scott Pruitt, minutes before his resignation

Sen. Joni Ernst when asked about EPA Chief Scott Pruitt and the Renewable Fuel Standard (RFS), minutes before his announced resignation. More coverage on DesMoinesRegister.com: From the Register's Brianne Pfannenstiel: Cedar Rapids gets $117 million from federal government for flood mitigation (https://dmreg.co/2ubknPV) From the Register's Editorial Board: Sen. Joni Ernst's high-wire act: Balancing Trump and Iowa interests (https://dmreg.co/2KSzox0) 🎥: Rodney White (on Twitter at @rodneywhite and Instagram at @rodneyawhite)