Washington: The US lawmakers attacked Facebook’s upcoming digital cryptocurrency Libra at a Senate hearing here, calling it “delusional” and “dangerous” and directing the social networking giant to clean up its house first before launching a new business model. David Marcus, Head of Facebook subsidiary Calibra, was grilled at the Senate Banking Committee on Tuesday, reports Tech Crunch. Democrat Senator Sherrod Brown who began the hearing blasted Facebook, saying it was “delusional” to think people would trust it with their hard-earned money. (IANS)