Which mandate does Congress have regarding the use of international force?

The correct answer highlights the constitutional authority granted to Congress regarding the declaration of war. According to the War Powers Clause of the U.S. Constitution, specifically Article I, Section 8, Congress has the exclusive power to declare war. This mandate establishes a significant check on the President's ability to engage military forces without legislative approval. While the President serves as the Commander in Chief and can deploy troops in response to emergencies or threats, such actions are typically expected to be reported to Congress, and extended military engagements generally require formal congressional authorization to declare war.

This understanding is essential in examining the balance of power between Congress and the presidency in matters of foreign policy and military actions, showcasing the intended framework of checks and balances the Founding Fathers established. The other options, while related to Congressional powers in different contexts, do not specifically address the critical mandate of war declaration tied to the use of international force.