The Trump administration on Wednesday waived regulations on the types of gasoline that are sold during the summer in an effort to ease surging fuel prices during the Iran war. The Environmental Protection Agency issued an emergency waiver to lift restrictions on the sale of E15 gas, a fuel blended with 15% ethanol. The sale of E15 is restricted from June through September due to regulations designed to reduce air pollution. The EPA also issued a waiver to remove all federal impediments to selling E10 gas, which is blended with 10% ethanol. The waivers will take effect on May 1.