Final answer:
The power to create new U.S. states is an exclusive power of Congress.
Step-by-step explanation:
The power to create new U.S. states is an Exclusive power of Congress. According to Article IV, Section 3 of the U.S. Constitution, it is the federal government's responsibility to admit new states into the Union. The federal government also has control over all territory controlled by the United States, including parts of states and territories.