U.S. President Donald Trump has called a meeting early next week with key senators and Cabinet officials to discuss potential changes to biofuels policy, which is coming under increasing pressure after a Pennsylvania refiner blamed the regulation for its bankruptcy, according to four sources familiar with the matter. The meeting comes as the oil industry and corn lobby – powerful forces in Washington – clash over the future of the Renewable Fuel Standard (RFS), a decades-old regulation that requires refiners to cover the cost of mixing biofuels such as corn-based ethanol into their fuel. Trump’s engagement reflects the high political stakes of protecting jobs in a key electoral state. Oil refiner Philadelphia Energy Solutions (PES), which employs more than a thousand people in Philadelphia, declared bankruptcy last month and blamed the regulation for its demise. The meeting, scheduled for Tuesday, will include Republican Senators Ted […]