DeLay was the target of the Justice Department investigation into Republican lobbyist Jack Abramoff's actions. Abramoff allegedly provided DeLay with trips, gifts, and political donations in exchange for favors to Abramoff's lobbying clients, which included the government of the U.S. Commonwealth of the Northern Mariana Islands, Internet gambling services, and several Native American tribes. Two of DeLay's former political aides, Tony Rudy and Michael Scanlon, as well as Abramoff himself, pleaded guilty in 2006 to charges relating to the investigation. Political columnist Robert Novak reported that Abramoff "has no derogatory information about former House Majority Leader Tom DeLay and is not implicating him as part of his plea bargain with federal prosecutors."