Anytime congress wants to use public opinion against the Pres they can call for a Special Guest to address a Joint session of Congress !
The pressure might be too much for Him and he will cave ! Turn Public Opinion against him !
It would be a Great POLITICAL TOOL to use against him ,He cant stop it ! A Foreign Leader,an EX President ? , A Business Leader
Paul Volker ,David Stockman ,Ron Paul ? It would be something The President couldent do anything about !