Amazon, Facebook, Google and Netflix -- along with their telecom industry foes -- have not committed to sending their chief executives to testify before the U.S. Congress in September on the future of net neutrality. From a report: Not a single one of those companies told the powerful House Energy and Commerce Committee, which is convening the hearing, that they would send their leaders to Washington, D.C., in the coming weeks, even at a time when the Trump administration is preparing to kill the open internet rules currently on the government's books. The panel initially asked those four tech giants, as well as AT&T, Charter, Comcast and Verizon, to indicate their plans for attendance by July 31. Now, the committee is pushing back its deadline indefinitely, as it continues its quest to engage the country's tech and telecom business leaders on net neutrality. "The committee has been engaging in productive conversations with all parties and will extend the deadline for response in order to allow for those discussions to continue," a spokesman said.