Tariffs Introduce Uncertainty As E15 Supporters Seek Summer Waiver

President Donald Trump’s wide-ranging tariffs on imports, and resulting retaliation by trading partners, are raising uncertainty over markets for corn ethanol and other biofuels, as ethanol supporters in Congress seek an emergency summer authorization for 15 percent ethanol fuel (E15) that could help to absorb some surplus ethanol if exports fall. Senate Majority Leader John Thune (R-SD) led a bipartisan group of 17 senators in an April 3 letter asking Trump to allow EPA to issue an emergency waiver to...