when can a president call a special session of congress
Special session This power exists for urgent or extraordinary situations that require congressional action when Congress is adjourned. Presidents have exercised this power 46 times to recall only the Senate and 28 times to recall both Chambers of Congress, most recently by Harry Truman in 1948.[2]
Joint session of the United States Congress The most recent addresses by foreign dignitaries were given by Indian Prime Minister Narendra Modi on June 8, 2016, Japanese Prime Minister Shinzo Abe on April 29, 2015, and Pope Francis on September 24, 2015. The Pope did not address the joint session as a religious dignitary but as a head of state.[11]