Facebook has hired a lobbying firm led by a former head of policy at Coinbase amid regulatory pushback from U.S. lawmakers over its Libra project.. .. . . .. .. . .. . . . . . . . . . . . .. . . . . . . . . . . . . .. . . ... . . . .. . . . . . .. . . .. . . . . . . . . . . .. . .. .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . .. .. . . .. . . . .. .. . . . . . .. . .. . . . . . . . . . . . . . . . . . .. . .. .. .. . .. . . . . . .. . . .. .. . .. . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . .. . . .. . . .