One of the Trump administration’s major efforts to prop up ailing coal companies has run aground in the White House, a setback to an industry that had hoped for a major resurgence after Donald Trump won the presidency. Energy Secretary Rick Perry has spent more than a year pushing various plans that would invoke national security to force power companies to keep their economically struggling coal plants running — a goal in line with Trump’s frequent pledges to revive what he calls “beautiful, clean coal.” But the White House has shelved the plan amid opposition from the president’s own advisers on the National Security Council and National Economic Council, according to four people with knowledge of the discussions.It is unclear whether Trump himself has decided against following Perry’s proposal. Even if he has, the sources warned that Trump frequently changes his mind, and the idea could re-emerge in advance of the president’s reelection campaign