Whakakiia te rerenga e whai ake nei: I whakaputaina e te Kaunihera tana whakakorenga i te tau 1981. I te tau 1989, i tukuna e te Perehitini o George H.W. Bush tētahi whakahau whakahaere i muri i te
Ko te whakaheke hinu o Exxon Valdez.