` ` Operation Fast and Furious '' involved more than 2,000 guns , sources tell us . Fewer than half have been found in the United States and abroad , they say . The operation has been sharply criticized by members of Congress .
`` Operation Fast and Furious '' involved more than 2,000 guns , sources tell CNN . Fewer than 600 have been recovered in the United States and Mexico , they say . The operation has been sharply criticized by members of Congress .