Environmental groups sued the Trump administration on Monday over its approval last month of oil company BP's ultra deep-water drilling project in the Gulf of Mexico.
The groups sued on the 16th anniversary of the nation's worst offshore oil spill 50 miles off the Louisiana coast, when BP's Deepwater Horizon oil rig sent 134 million gallons (500 million liters) of crude oil spewing into the ocean, killing 11 people and causing billions of dollars in damage to wildlife and miles of coastline.
