President Joe Biden is visiting corn-rich Iowa on Tuesday to announce he’ll suspend a federal rule preventing the sale of higher ethanol blend gasoline this summer as his administration tries to tamp down prices at the pump that have spiked during Russia’s war with Ukraine. Most gasoline sold in the U.S. is blended with 10% ethanol. The Environmental Protection Agency will issue an emergency waiver to allow widespread sale of 15% ethanol blend that is usually prohibited between June 1 and Sept. 15 because of concerns that it adds to smog in high temperatures. Read more: https://bit.ly/37KkIRb