ADVOCACY: Former Vilsack adviser to lobby for corn industry group Daniel Bush, E&E reporter Published: Wednesday, July 9, 2014 A former adviser to Agriculture Secretary Tom Vilsack has been hired to lobby for the National Corn Growers Association. 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.