Michael Isikoff, an investigative reporter for Yahoo News, has confirmed from that Sam Clovis, Trump's nominee for the top science position at the USDA, is the 'unnamed supervisor' from George Papadopoulos' guilty plea.
The charges against Papadopoulos provide substantial new details about communications between the Trump campaign and figures close to the Russian government — a central part of the investigation by Mueller. The court records unsealed Monday do not provide a clear account of how senior Trump officials followed up on Papadopoulos’s efforts to set up a meeting with Russian officials. But they quote one unidentified campaign “supervisor” as emailing him in August 2016 that “I would encourage you” to make a trip to Moscow to arrange such a meeting. A Trump campaign source identified the supervisor as Sam Clovis, a conservative radio host who was co-chairman of the campaign.