Turkey is still occupying almost half of the island of Cyprus.
According to Wikipedia:
United States arms embargo on Turkey and the Republic of Cyprus
After the hostilities of 1974, the United States applied an arms embargo on both Turkey and Cyprus. The embargo on Turkey was lifted after three years by President Jimmy Carter, whereas the embargo on Cyprus remained in place for longer, having most recently been enforced on 18 November 1992. In December 2019, the US Congress lifted a decades-old arms embargo on Cyprus.
Why did the USA revoke the arms embargo or sanction on Turkey only after 3 years of the invasion of Cyprus?