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Jeffrey Skilling, convicted former Enron Corp. chief executive officer, arrives to the Bob Casey Federal Courthouse in Houston, Texas, U.S., on Friday, June 21, 2013. Skilling is set to appear in court to learn how much longer hell stay in prison for spearheading the fraud that destroyed the worlds largest energy trader. Photographer: Aaron M. Sprecher/Bloomberg via Getty Images

Jeffrey Skilling, convicted former Enron Corp. chief executive officer, arrives to the Bob Casey Federal Courthouse in Houston, Texas, U.S., on Friday, June 21, 2013. Skilling is set to appear in court to learn how much longer hell stay in prison for spearheading the fraud that destroyed the worlds largest energy trader. Photographer: Aaron M. Sprecher/Bloomberg via Getty Images