> 12/04/2019 Kash Herridge https://youtube.com/watch?v=esy6Rh48w8U CBS News Exclusive: White House staffer Kash Patel denies he was back channel to Trump on Ukraine CBS News 4.77M subscribers 21,484 views Dec 4, 2019 A White House staffer named in House Intelligence Committee Chairman Adam Schiff's impeachment report is refuting the suggestion that he may have been part of a back channel to the president on Ukraine. CBS News senior investigative correspondent Catherine Herridge spoke to CBSN's "Red & Blue" about her interview with the insider, Kash Patel.