The Federal Energy Regulatory Commission extended the time Constitution Pipeline Co. LLC has to build the natural gas line until Dec. 2, 2020, according to a Nov. 5 order issued before the previous extension was set to expire. The Williams Partners LP’s project has been left in limbo by legal challenges and regulatory hurdles since Federal regulators approved construction in 2014. Earlier this year, FERC denied a requested to reconsider its decision to uphold the New York State Department of Environmental Conservation’s rejection of a water permit that’s put construction of the gas line on hold. The 125-mile link, which is designed to ship shale supplies from Pennsylvania to New York, has been met with resistance from landowners and environmental groups.