The U.S. is fighting a judge’s decision that shaved more than $4 billion off the maximum pollution penalties BP Plc must pay for its 2010 Gulf of Mexico disaster, the biggest offshore oil discharge in U.S. history. The spill size was set in January by U.S. District Judge Carl Barbier in New Orleans at 3.2 million barrels. He also rejected claims London-based BP was reckless in preparing for a disaster or had acted unreasonably in responding to the spill. The U.S. didn’t say which part of the court ruling it was appealing in a notice filed Friday. The U.S. estimated the spill at 4.2 million barrels, which could have triggered a maximum $18 billion fine. BP appealed the spill-size […]