The Colstrip coal-fired power plant in eastern Montana, in 2008. Coal’s slow downfall is gaining momentum across the U.S. as clean energy becomes cheaper and wins widespread support, but lawmakers in mining states from Wyoming to West Virginia are determined to fight back with a series of roadblocks to President Joe Biden’s plan to cut greenhouse-gas emissions. Seeking to prolong the lifespan of an industry that’s vital to local economies, at least five states are seeking to pass legislation that would give them weapons such as bigger hurdles to shut coal-fired plants, a war chest for potential legal battles, more power to state regulators over utilities, tax cuts and cheaper state insurance for power stations. The race to shield coal country from an energy transition that Biden contends will generate jobs and wealth in everything from solar-panel manufacturing to wind power generation highlights the political complexity of the shift […]