yes. they can.
When an unscheduled session is called by the President it is called a special session. Special sessions may be convened to address special topics, or emergencies such as war or natural disaster.
This was the only session in which Mahatma Gandhi was the President
The president ask congress to hold a special session when the two houses cannot agree on a date to adjourn or in an emergency situation.
Such would be a special session or perhaps a called session of Congress.
A special session.
The President of the United States has the authority to call for a special session of Congress. This may be done to address urgent matters or to convene lawmakers outside of their regular schedule.
The president's office is in the White House. He comes to the capitol on rare special occasions such as when he wants to make a speech to Congress.
A special session of Congress is called in the event of an emergency, whereas Congress would normally only have one session a year.
to address the economic crisis
Special session
tariff reform
Only the president can call congress into special session. Only 26 special sessions have been held,the last one was in 1948. The president can call congress or each of its houses. The senate has been called into special session 46 occasions last was 1933.