The three biggest U.S. automakers -- Ford Motor Co., General Motors Corp., and Chrysler LLC -- submitted plans to Congress on Tuesday, in hopes of getting a line of credit from the government to keep their companies in business.

Congress returns to Washington Monday to convene a lame-duck session with the struggling auto industry as its first priority. Democrats want to use part of the $700 billion Wall Street bailout for emergency loans to help the Big Three carmakers.