The Constitution empowers the president to appoint ambassadors with the Senate’s approval, and prohibits the states from entering into any treaty, alliance, or confederation. Congress shares many foreign policy powers and has the sole authority to declare war.
Monday - Friday: 9:30 a.m. – 5 p.m.
Saturday: 9:30 a.m. – 6 p.m.
Sunday: 12 p.m. – 5 p.m.
525 Arch Street
Philadelphia, Pennsylvania 19106