Liquefied natural gas (LNG) imports to the United States are increasing to supplement domestic gas production. Recent actions by Congress and federal agencies have promoted greater LNG supplies by changing regulations, clarifying siting authorities, and streamlining the approval process for LNG import terminals. Were these policies to continue and gas demand to grow, LNG might account for as much as 21% of U.S. gas supply by 2025, up from 3% in 2005...