A liquefied natural gas facility in southern Maryland is generating intense criticism from environmental groups, in a fight that echoes the protracted battle over the proposed Keystone XL pipeline. Energy company Dominion Resources is hoping to invest up to $3.8 billion to upgrade the Cove Point LNG facility as an export terminal. If successful, it could become the East Coast's chief LNG export facility, sending billions of cubic feet of natural gas to Japan, India, and elsewhere. Dominion stresses that the project would have a huge economic impact close to home as well. "The local area of Calvert County gets...