Scandals of the Reagan administration
The presidency of Ronald Reagan was marked by numerous scandals, resulting in the investigation, indictment or conviction of over 138 administration officials, the largest number for any president of the United States. == Iran–Contra affair == The most well-known and politically damaging of the scandals since Watergate, the Iran-Contra affair came to light in 1986 when Ronald Reagan conceded that the United States had sold weapons to the Islamic Republic of Iran as part of a largely unsuccessful effort to secure the release of six U.S. citizens being held hostage in Lebanon.
Source: Wikipedia — Scandals of the Reagan administration (CC BY-SA 4.0)