Auto leaders visit Congress, back use of renewable fuels.

WASHINGTON - Leaders of Detroit's automakers endorsed a plan Thursday to require one-fourth of U.S. energy supplies to come from ethanol and other renewable sources by 2025. After a day-long canvass of Capitol Hill, heads of General Motors Corp., Ford Motor Co. and DaimlerChrysler AG's Chrysler Group said their meetings with Democratic and Republican congressional leaders were not a plea for government assistance to troubled companies but a chance to present their case on energy issues along with long-standing views on advantages they claim foreign automakers unfairly enjoy.