“Pelosi (D-Calif.) and Schumer (D-N.Y.) had not expected the session to
be televised and repeatedly asked Trump to take the discussions
off-camera. But the president allowed the acrimonious encounter to
continue for nearly 20 minutes before kicking the media out of the Oval
Office. ...”


They’re evidently used to closed door and back room deals and can’t handle the wide open spaces.. nothing wrong with having the discussion out in the open.