Labeling of tuna products : hearing before the Subcommittee on Commerce, Consumer Protection, and Competitiveness of the Committee on Energy and Commerce, House of Representatives, One Hundred First Congress, second session, on H.R. 2926 and H.R. 2948 ... to require tuna products to be labeled respecting the method used to catch the tuna ... to amend the Marine Mammal Protection Act of 1972 to require disclosure ... regarding the use of tuna fishing methods which directly result in the death of marine mammals, July 25, 1990.