don nicklesFormer Oklahoma Republican Senator Don Nickles is working for the Koch Brothers' family business, tackling issues regarding campaign finance and repeal of the wind energy production tax credit.

He served the Sooner State from 1981 to 2005 before setting up The Nickles Group in Washington DC.

Nickles, who rose to chair the Senate Budget Committee, also sat on the board of directors of Oklahoma City’s Chesapeake Energy.

Hazen Marshall and Stacey Hughes, former Senate aides of Nickles, join him on the lobbying team of Wichita-based Koch Companies Public Sector LLC.