Oil slick closes on U.S. coast, BP pressed to act

VENICE, La. (Reuters) - A huge wind-driven oil slick bore down on the U.S. Gulf coast on Sunday, threatening an environmental catastrophe, and the Obama administration heaped pressure on BP Plc to halt the uncontrolled spill from its ruptured Gulf of Mexico well.

Since the explosion and sinking last week of the Deepwater Horizon rig, a disaster scenario has emerged with hundreds of thousands of gallons of crude oil spewing unchecked into the Gulf and moving inexorably northward to the coast.