Mitchell v. United States was a landmark Supreme Court case in Black history that took place in 1975. It involved John N. Mitchell, the former Attorney General of the United States under President Richard Nixon, who was convicted of conspiracy, obstruction of justice, and perjury in connection with the Watergate scandal.

Mitchell was among several individuals charged in the Watergate scandal, which involved a break-in at the Democratic National Committee headquarters and a subsequent cover-up orchestrated by members of the Nixon administration. Mitchell's conviction was a significant moment in American history as it marked the first time that a sitting or former U.S. Attorney General had been found guilty of criminal charges.

The case highlighted the importance of accountability and the rule of law, demonstrating that even high-ranking government officials are not above the law. Mitchell's conviction, along with those of other individuals involved in the Watergate scandal, ultimately led to President Nixon's resignation in 1974.

Overall, Mitchell v. United States is an important chapter in Black history as it showcased the unwavering commitment to justice and the principles of democracy in holding those in power accountable for their actions, regardless of their position or influence.