Attorney General Peter Kilmartin is asking the U.S. Department of the Interior to drop plans to expand offshore drilling for oil and gas.  Kilmartin and several other attorneys general warn that offshore drilling is a threat to the economy and ecology of states along the eastern seaboard.   Kilmartin is also urging Rhode Islanders opposed to the plan to voice their concerns at a Bureau of Ocean Energy Management hearing February 28th at the Providence Marriott.