Anadarko…is liable under federal oil pollution laws for environmental damage caused by the April 2010 blowout of the Macondo well and the Gulf of Mexico oil spill that followed, the U.S. government said. The exploration and production unit of Anadarko, which owned most of the company’s 25 percent stake in the BP…well, asked a federal judge in New Orleans to dismiss it from a Justice Department lawsuit. The government claimed environmental-law violations in the largest offshore oil spill in U.S. history. It also sued other companies involved in the well, including BP. The government asked U.S. District Judge Carl Barbier to deny Anadarko E&P Co.’s motion to drop it from the case and find [it]…and its affiliate liable under the Oil Pollution Act and the Clean Water Act.