This action was brought by a U.S. senator against the president to enjoin him from returning the Hungarian coronation regalia to the People's Republic of Hungary. The Holy Crown of St. Stephen had been held by the Hungarian people as a treasured symbol of their statehood and nationality for nearly 1,000 years. At the close of World War II, it was entrusted to the United States for safekeeping by Hungarian soldiers. In 1977, the governments of the United States and Hungary entered into an agreement returning the crown to Hungary. Many Hungarians living in the United States were opposed to the return of the crown. The plaintiff filed this action seeking an injunction against delivery of the crown to Hungary on the ground that such action was tantamount to a treaty undertaken by the president without the prior advice and consent of the Senate.
1. Why did the president use a sole executive agreement resolving this issue with Hungary instead of relying on the treaty power?
2. Was the president's action required to be authorized by the Congress?
3. What kinds of agreements are usually reserved for treaties, and what kinds are handled through executive agreements?