Donald Trump’s presidency is widely viewed as a boon for the U.S. energy industry, but some of his planned policies could pose problems for the natural-gas business. Mr. Trump has won plaudits from energy executives for saying he would peel back government regulations on oil companies, oppose global efforts to curb climate change and review a recent agreement that lifted sanctions on Iran, a major oil exporter. Yet some of his other proposals could be detrimental to natural gas. He has pledged to tear up trade pacts and wall off Mexico, which could hurt the flow of U.S. natural gas to its southern neighbor. Mexico has become an increasingly important outlet for the fuel that has helped buoy domestic prices amid a glut of shale gas, analysts say. “Mexico has been one of the […]