The United States Senate has had a long and complex history with regard to Black Americans. The Senate, which is one of the two chambers of the U.S. Congress, has traditionally been dominated by white men, particularly in its earlier years. However, there have been significant milestones in Black history related to the Senate.

- Hiram Revels: In 1870, Hiram Revels, a Black Republican from Mississippi, became the first African American to serve in the U.S. Senate. He was elected to fill the vacant seat previously held by Jefferson Davis, who had become the President of the Confederate States of America.

- Blanche K. Bruce: Following Hiram Revels, Blanche K. Bruce became the second African American to serve in the U.S. Senate. Bruce, a former slave, served as a Senator from Mississippi from 1875 to 1881.

- Edward Brooke: In 1966, Edward Brooke of Massachusetts became the first African American elected to the U.S. Senate by popular vote. He served two terms in the Senate from 1967 to 1979.

- Carol Moseley Braun: In 1992, Carol Moseley Braun of Illinois became the first African American woman elected to the U.S. Senate. She served one term in the Senate from 1993 to 1999.

- Kamala Harris: While not solely a Black American, it is worth mentioning that Kamala Harris made history in 2017 by becoming the second African American woman and the first South Asian American woman to serve in the U.S. Senate. She now serves as the Vice President of the United States.

These trailblazers have helped break racial and gender barriers in the U.S. Senate and have made significant contributions to American history. Despite the progress made, the Senate still struggles with diversity and representation, with only a small number of Black Senators serving throughout its history.