The Answer is Albert B. Fall and some executives of petroleum companies.
The Teapot Dome was a government-owned oil field in Wyoming. It had been set aside as an oil reserve for ensuring fuel for warships. Harding decided to move administrative control of Teapot Dome from the Department of Navy to the Department of Interior. Thereafter, his secretary of the interior, Albert B. Fall, a former Republican senator from New Mexico, began signing contracts with close friends who were executives of petroleum companies that wanted access to the oil field. It turned out that he had taken bribes of about $400,000 from an oil tycoon. Fall was convicted of conspiracy and bribery and sentenced to a year in prison, the first former cabinet official ever to serve time as a result of misconduct in office.