Mealey's (June 19, 2019, 1:19 PM EDT) -- WASHINGTON, D.C. — Two federal legislators on June 17 announced that the U.S. Government Accountability Office (GAO) will open an investigation into whether the Trump administration violated “longstanding prohibitions” against using appropriated funds for hydraulic fracturing leasing activities within the historic boundariesthe Grand Staircase-Escalante National Monument....