The Environmental Protection Agency on Friday rejected a request from eight governors and nearly 200 members of Congress to waive requirements for the use of corn-based ethanol in gasoline, after last summer's severe drought wilted much of the nation's corn crop.

The move is a victory for corn farmers who have seen corn prices jump 400 percent in recent years. 

But it is a loss for pork and beef producers who say the diversion of corn to ethanol raises feed prices and ultimately prices at the supermarket.