I wonder what Hitler would have done to a reporter who called him a liar to his face.
Hitler would have had to do nothing, his propaganda army would have taken care of the problem.
What is really troubling is this Asshad does it on foreign soil. When it came time to depart, he would be standing on the tarmac breathing the Jet A exhaust.
Acosta and company probably hope Trump can be provoked into saying something which can be used against him.
Ergo, I would ignore him. Totally. Never call on him.
And respond only with shrugs, winks, nods, etc.