Push for encryption law falters despite Apple case spotlight

By Dustin Volz, Mark Hosenball and Joseph Menn WASHINGTON/ SAN FRANCISCO (Reuters) - After a rampage that left 14 people dead in San Bernardino, key U.S. lawmakers pledged to seek a law requiring technology companies to give law enforcement agencies a "back door" to encrypted communications and electronic devices, such as the iPhone used by one of the shooters. Draft legislation that Senators Richard Burr and Dianne Feinstein, the Republican and Democratic leaders of the Intelligence Committee,