Final answer:
True, the President commands the National Guard when it is federalized and called into actual service of the United States during times of war or national emergency.
Step-by-step explanation:
True, the National Guard is commanded by the President under certain circumstances. According to Article 2 of the U.S. Constitution and subsequent legal frameworks, the President serves as Commander in Chief of the United States armed forces. This includes the Army, Air Force, Navy, Marine Corps, and Coast Guard. Additionally, the President has authority over the militia of several states, which includes the National Guard, when they are called into the actual service of the United States. In times of war or national emergency, the President can federalize the National Guard. However, when the National Guard is not federalized, individual state governors have the authority to command their respective National Guard units for state-related functions.