The Trump administration intends to ask Congress to allow E15, an ethanol-gas blend, to be sold at the pumps year-round, a U.S. official familiar with the matter told CBS News.  The 15% ethanol blend is usually only available part of the year under a waiver from the Environmental Protection Agency as temperatures rise to help ease high gas prices. The administration plans to make the request when it submits a supplemental funding request to lawmakers, the official said. Several requests on