ADVOCACY: Exxon hires former Wyden chief of staff as lobbyist Kevin Bogardus, E&E reporter Published: Monday, June 30, 2014 Exxon Mobil Corp. has kept up its ties with Josh Kardon, ex-chief of staff to Sen. Ron Wyden (D-Ore.). Please subscribe to Greenwire to read the full story. Username: Password: Forgot your access codes? Recover them. Not a subscriber? Sign up for a trial. Ready to subscribe? Click here.