"** FILE ** In a file photo Rep. Joe Barton, R-Texas, poses at the Capitol Rotunda following a House Republican Steering Committee meeting on the Capitol Hill, Wednesday, Feb. 11, 2004, in Washington. Texas congressmen Joe Barton and Ralph Hall urged President Bush on Tuesday, June 28, 2005, to oppose a Chinese oil company's attempt to take over California-based Unocal Corp., arguing that ""this transaction poses a clear threat to the energy and national security of the United States."" (AP Photo/Manuel Balce Ceneta) Ran on: 07-18-2005  Sherwood Boehlert FEB. 11, 2004, PHOTO Photo: MANUEL BALCE CENETA"