U.S. President Donald Trump has directed members of his Cabinet to review the administration’s expanded use of waivers exempting small refineries from the nation’s biofuel policy, after hearing from farmers angry about the issue during his recent Midwest tour, according to three sources familiar with the matter. Trump’s move underscores the rising political importance of the U.S. Renewable Fuel Standard, a more than decade-old law which requires refineries to blend corn-based ethanol into their gasoline to help farmers, but which also provides waivers to small refining facilities that can prove compliance would cause them financial harm. More >>