Regarding your March 13 editorial “ You RIN Some, You Lose Some ” and Thomas Landstreet’s “Biofuel Mandates Are a Bad Idea Whose Time May Be Up ” (op-ed, March 12): President Trump promised Midwestern voters that he would not abandon the rural economy by gutting the Renewable Fuel Standard (RFS). Now refineries are attempting to hijack a conversation about one mismanaged refinery, Philadelphia Energy Solutions (PES), to justify betraying that promise. They want an industry-wide handout that would undermine American energy security, hurt the struggling farm economy and destroy rural manufacturing jobs in biofuel production. The truth is that refiners are making great profits. Valero just announced a six-fold increase in earnings. CVR Energy posted a 2,888% jump in profits per share last quarter. Instead of demanding special favors, they should be thanking this White House for tax reforms that are expected to boost refinery profits by 20%. […]