A federal judge slammed an Obama administration gambit to revoke mountaintop mining permits Friday, saying the EPA invented authority where there was none. “EPA resorts to magical thinking” to justify nullifying permits issued by the U.S. Army Corps of Engineers for Arch Coal Inc.’s Mingo Logan mine in West Virginia, wrote U.S. District Judge Amy Berman Jackson in Washington, D.C. Berman Jackson said the EPA’s effort to revoke permits already issued by the Army Corps lacked the backing of any statutory provision or regulation. “It posits a scenario involving the automatic self-destruction of a written permit issued by an entirely...