FILE - In this April 18, 2008, file photo Vietnamese workers process fillet from catfish at the Faquimex company in BenTre province, situated in the delta of the Mekong River in Vietnam. Years ago Congress passed a law prohibiting the Vietnamese from labeling their catch as "catfish"; still the cheaper imports continued to rise. A new law from Congress now requires any catfish sold in the U.S. to undergo new inspections, and leaves it up to the Agriculture secretary to define what species would fall under the definition of "catfish". AP Photo logo AP Photo 5 months ago

FILE - In this April 18, 2008, file photo Vietnamese workers process fillet from catfish at the Faquimex company in BenTre province, situated in the delta of the Mekong River in Vietnam. Years ago Congress passed a law prohibiting the Vietnamese from labeling their catch as "catfish"; still the cheaper imports continued to rise. A new law from Congress now requires any catfish sold in the U.S. to undergo new inspections, and leaves it up to the Agriculture secretary to define what species would fall under the definition of "catfish".