Jeff Neely, a regional commissioner who oversaw the event, had been scheduled to testify today before the House Oversight Committee. He cited his Fifth Amendment rights.

Brian Miller, the GSA inspector general who investigated the spending, told the committee he has asked the Department of Justice to consider criminal charges.

GSA Administrator Martha Johnson resigned April 2 following the inspector general's report on the 2010 conference for agency employees. The five-day event featured a professional mind reader, a clown and a $75,000 team-building exercise that involved assembling bicycles.

Johnson apologized at today's hearing. "I will mourn for the rest of my life the loss of my appointment," she said in her opening statement.