epa may have tipped? >> absolutely. absolutely. that's key here. because governmental employees are bound by the insider trading rules as much as the of a person or person in the community. >> a stock tip web site during a concert that ron thiessen attended. the posts were removed shortly after the cnn started asking questions about them. a company spokesman says mr. thiessen did not tell investors in public or private conversation on june 19, 2019 or at any other time that he expected epa to imminently withdraw its veto. cnn obtained official notes with scientific research teams and groups opposed to the mines june 26 noting participants saying northern dynasty minerals and the pebble limited partnership have been telling investors the