Jonathan M. Winer, the Obama State Department official who acknowledged regularly interfacing with the author of the controversial, largely discredited 35-page anti-Trump dossier, served as senior vice president of a firm that did lobbying work for Tenex, the U.S. subsidiary of Rosatom, the Russian state corporation headquartered in Moscow.

In 2010, Rosatom infamously purchased a controlling stake in Uranium One, the Canadian uranium mining company with operations in the U.S. The purchase was approved by the Obama administration in a decision that is currently being probed by the House Permanent Select Committee on Intelligence.

In a statement to Breitbart News, APCO Worldwide, where Winer served as senior vice president from 2008 to 2013, denied that the firm’s work for Rosatom’s subsidiary Tenex was related to the purchase of Uranium One or to the acquisition of uranium in general. Instead, APCO said its work for Tenex, which took place in 2010 and 2011, focused on sales of fuel to the U.S. energy market. APCO also denied that Winer did any work related to Tenex.

After his name surfaced