Rep. Henry Waxman, D-Calif. talks to reporters on Capitol Hill in Washington, Thursday, Nov. 20, 2008, after the House Democratic Caucus elected him as Chairman of the House Energy and Commerce Committee over long standing chairman, Rep. John Dingell, D-Mich. (AP Photo/Gerald Herbert)

Rep. Henry Waxman, D-Calif. walks away after talking to reporters on Capitol Hill in Washington, Thursday, Nov. 20, 2008, after the House Democratic Caucus elected him as Chairman of the House Energy and Commerce Committee over long standing chairman, Rep. John Dingell, D-Mich. (AP Photo/Gerald Herbert)

In this Feb. 26, 2008, file photo, Rep. Henry Waxman, D-Calif., questions witnesses during a hearing on Capitol Hill in Washington. House Democrats will decide a bruising intra-party battle Thursday as they vote on whether to topple veteran Rep. John Dingell as chairman of the committee with oversight of energy and global warming and replace him with Waxman. (AP Photo/Manuel Balce Ceneta, File)

Rep. Henry Waxman, D-Calif, arrives for a Democratic Caucus on Capitol Hill in Washington, Tuesday, Nov. 18, 2008. (AP Photo/Evan Vucci)

In this Feb. 26, 2008, file photo, Rep. Henry Waxman, D-Calif., questions witnesses during a hearing on Capitol Hill in Washington. President-elect Obama has said he wants to act quickly on climate change but crucial bipartisan support could erode if Waxman succeeds at unseating Rep. John Dingell, D-Mich., as chairman of the House Energy and Commerce Committee. (AP Photo/Manuel Balce Ceneta, File)

House Oversight and Government Reform Committee Chairman Rep. Henry Waxman, D-Calif., right, watches as former Federal Reserve Chairman Alan Greenspan takes his seat on Capitol Hill in Washington, Thursday, Oct. 23, 2008, prior to the committee's hearing on the federal role of the financial markets. (AP Photo/Lawrence Jackson)

Standard and Poor's President Deven Sharma, left, leaves after speaking with the House Oversight and Government Reform Committee Chairman, Rep. Henry Waxman, D-Calif. on Capitol Hill in Washington, Wednesday, Oct. 22, 2008, after a hearing on the credit rating system. (AP Photo/Lawrence Jackson)

House Oversight and Government Reform Committee Chairman, Rep. Henry Waxman, D-Mich, right, talks with committee ranking member Rep. Tom Davis, R-Va., during a hearing on Capitol Hill in Washington, Monday, Oct. 6, 2008, on the collapse of Lehman Brothers. Days from becoming the largest bankruptcy in U.S. history, Lehman Brothers steered millions to departing executives even while pleading for a federal rescue, Congress was told Monday. Waxman said Lehman was "a company in which there was no accountability for failure." (AP Photo/Susan Walsh)