If Barry were subpoenaed, would he be permitted to use his teleprompter?
He would have to use his intellectual pinch hitter, the teleprompter.
In fact, I am certain the court would demand it. Between all the Uhs, Ahems, let me be clears, as I stated before, etc, the court would be compelled in the interest of time to employ it.
Besides, those teleprompters are the closest thing to a Rosetta Stone, enabling us to understand him.