Rep. Darrell Issa, R-California, chairman of the House Oversight and Government Reform Committee, has been investigating the VIP operation to learn who received special deals from the program known internally as "Friends of Angelo."

Issa's letter, dated Tuesday and obtained Wednesday by The Associated Press, was sent to Mozilo's attorney, David Siegel, in Los Angeles. Siegel commented, "We received the request today and will respond to the committee's staff as appropriate."

Issa's investigation so far has identified four current House members whose loans went through the VIP program: Rep. Pete Sessions of Texas, chairman of the National Republican Congressional Committee; Rep. Howard "Buck" McKeon, R-California, who has major influence over defense matters as chairman of the House Armed Services Committee; Rep. Elton Gallegly, R-California; and Rep. Edolphus Towns, D-New York - Issa's predecessor as House Oversight chairman.

In addition, it previously was revealed that former Sen. Chris Dodd, D-Connecticut, and Sen. Kent Conrad, D-North Dakota had VIP loans. The Senate's ethics committee cleared them in 2009 of any rules violations but said they should have exercised better judgment.