WeeklyUS lays out plan to free up LNG-by-rail rulesEnvironmental groups hit out at 'shocking' proposal that 'courts disaster'Dangers: a total of 47 people were killed by an explosion after a train carrying crude from the Bakken shale of North Dakota derailed in Lac-Megantic, Quebec in 2013Photo: AFP/SCANPIXCaroline EvansHouston