the author continues. though sanders said today, lie detector tests aren't on the table, sources say trump hasn't ruled them out and his own vice president volunteered to take one. >> i would agree to take it in a heartbeat. >> reporter: pence getting a doover after he was first asked if anyone on his staff wrote the op-ed. >> i just -- i wouldn't know. and i would -- i really would hope not. >> reporter: telling cbs, he misunderstood the question. >> oh. well, i thought you were speaking about the administration staff. let me be very clear. i'm 100% confident that no one on the vice president's staff was involved in this anonymous editorial. >> reporter: amid the paranoia, a new change in west wing phone policy, sources tell cnn staff can no longer leave their government-issued devices outside the situation room, like they did for the last 19 months. sources say this is a direct response to omarosa manigault newman after she revealed she