Heather Cox Richardson, last night: “If [Burr] is discredited enough to lose his chairmanship, McConnell will get to choose his replacement. And it’s a pretty safe bet the committee will no longer support the conclusions of the Mueller Report.”

Christina Wilkie, this morning, after Burr stepped down: “After years of work, Burr was still finalizing his committee’s bipartisan report on the investigation of Russia’s meddling in the 2016 election when he stepped down.”