Edited sentence: Actor Kevin Costner demonstrated his own technology that could be used to clean up the oil, but the U.The governments of Canada, Croatia, France, Germany, Ireland, Mexico, the Netherlands, Norway, Romania, Republic of Korea, Spain, Sweden, and the United Kingdom, and the United Nations all offered to help clean up the oil, but the U.government turned down all of their offers of help because it would have violated the Jones Act.government would not allow that either, because the technology could only clean up 99.9% of the oil instead of 100%