WASHINGTON (Reuters) - U.S. consumer groups blamed a "business-friendly" Bush administration for lax food safety policies on Monday, in the wake of the largest U.S. meat recall ever that prompted a 34 percent drop in shares of Pilgrim's Pride Corp . Pilgrim's Pride, the second largest U.S. poultry producer, on Sunday recalled 27.4 million pounds of fresh and frozen ready-to-eat turkey and chicken products under its Wampler brand, after pulling 295,000 pounds of turkey and chicken products from the market last week due to listeria concerns. The recall surpasses the previous record of 25 million pounds of ground beef set...