A resolution to express the sense of the Senate regarding the constitutional right of State Governors to repel the dangerous ongoing invasion across the United States southern border.

SRES 543 is a non-binding Senate resolution expressing the Senate's opinion that state governors possess constitutional authority under Article I, Section 10 and Article IV, Section 4 to repel what it describes as an "invasion" at the southern border. It cites alleged failures in federal border management, including high apprehension numbers and claims about security risks, to argue that governors may act as Commander-in-Chief of their states to address border conditions. The resolution does not create new law or policy but formally states the Senate's position on governors' constitutional powers. It follows similar actions by states like Texas and Arizona, which have declared border emergencies.