President Joe Biden signed a waiver to expand sales of higher-ethanol gasoline this summer in an effort to lower fuel prices. He says the move could lower gas prices by as much as 10 cents per gallon. Biden made the announcement Tuesday in Iowa. -------- Follow Bloomberg for business news & analysis, up-to-the-minute market data, features, profiles and more: http://www.bloomberg.com Connect with us on... Twitter: https://twitter.com/business Facebook: https://www.facebook.com/bloombergbusiness Instagram: https://www.instagram.com/bloombergbusiness/