Answer:
not being able to bring home the Iranian hostages
Step-by-step explanation:
President Jimmy Carter held the presidency during the Iranian hostage crisis in 1979. The crisis started after a group of militarized College students who supported Iranian revolutions attacked the United States embassy in that located in Tehran and took 52 hostages.
The crisis lasted for 2 years and wasn't solved by the Time Carter's presidency ended. The crisis ended after Ronald Reagan took the presidency in 1981 and signed the Algiers Accords,