Name: Dick Cheney
Current job: Vice President of the United States
Link to Enron: Mr Cheney is alleged to have met Enron executives four times in 2001 to discuss energy policy.
Mr Cheney’s critics say that no company in the US stood to gain more from the energy policies the vice president has developed than Enron.
The General Accounting Office, the investigative arm of the US Congress, is demanding that the vice president release documents relating to the formulation of government energy policy. He is resisting this.
“What we've told General Accounting Office is what we won't do is make it impossible for me or future vice presidents to ever have a conversation in confidence with anybody without having, ultimately, to tell a member of Congress what we talked about," Mr Cheney has said.
Mr Cheney, who chairs the White House energy task force, says Enron's troubled finances were never discussed.
Mr Cheney is a former Wyoming oilman and chief executive of the oil services company Halliburton.
US oil services and engineering firm Halliburton is being investigated for its accounting practices when US Vice President Dick Cheney was at the helm.
A US pressure group has filed a lawsuit against him, accusing him of defrauding Halliburton shareholders.