Final answer:
The President may convene or end a session of Congress in scenarios such as a national emergency, the State of the Union Address, or during a recess.
Step-by-step explanation:
The President may convene or end a session of Congress in certain scenarios:
- When a national emergency requires urgent legislative action: The President can call Congress into special session to address the emergency and take necessary legislative actions.
- During the State of the Union Address: The President delivers this address annually to report on the state of the nation and recommend legislative measures to Congress.
- If Congress is on a recess: The President can summon Congress into special session if there is urgent business that needs to be addressed.