John Adams Sr. was an American minister, lawyer, and politician and a member of the unicameral Nebraska Legislature. He was born in Atlanta, Georgia, was a lawyer and minister in South Carolina, Washington state, and Colorado before settling in Omaha, Nebraska. While in South Carolina he took a civil rights case to the U.S. Supreme Court where he lost. He was the only black member of the Nebraska unicameral for much of his tenure from 1949–1962. He was an ordained minister and at the time of his death was presiding elder of the African Methodist Episcopal Church. As a legislator, he was an outspoken champion of civil rights and fought for fair employment practices and pensions for retired teachers.
While not formally trained as a lawyer, Adams was first admitted to the bar in South Carolina during the early 1900s. He practiced law in Orangeburg, South Carolina in a firm with Jacob Moorer, who was also black. In 1908, Moorer and Adams served as counsel for African Americansharecropper Pink Franklin who killed a white constable who had come to arrest him, arguing that the act was in self-defense as Pink and his wife, Patsy, were both wounded and claimed the officer fired first. In a tense racial environment, Franklin was found guilty and sentenced to death by an all-white jury. Moorer and Adams appealed, challenging the racial composition of the grand jury and petit jury as well as the constitutionality of South Carolina's 1895 Constitution. They lost in state courts and appealed to the U.S. Supreme Court where they again lost in Franklin v. South Carolina. The case received national attention and finally in 1919, Franklin sentence was commuted and he was released on parole due to the continued efforts of Moorer and Adams, but also the efforts of Booker T. Washington, Oswald Garrison Villard, Joel Elias Spingarn, Frances Blascoer, Bernard Hagood, and Claude Sawyer That occasion marked the second time black lawyers had appeared before the Supreme Court. Adams left South Carolina after that case and moved to Washington State and then to Pueblo, Colorado where he continued to practice law. After moving to Omaha and was admitted to the Nebraska bar on motion in 1922. Adams also served as president of Daniel Payne University at Birmingham, Alabama in 1935 where he served for four years. Adams' son, John Adams Jr. was a Nebraska State Legislator from 1935–1941. In 1942, John Jr. lost in an election against dentist Dr. Harry A Foster. In 1944, while Adams Jr. was serving in World War II, Adams Sr. decided to run for that seat, in Nebraska's fifth district, losing to Foster. Adams Sr. lost again in a primary in 1946. In 1948, Adams Sr. won, winning again against Foster in every election until 1962. As a legislator, he was an outspoken champion of civil rights and fought for fair employment practices and pensions for retired teachers. He also was known for his opposition to gambling and vehemently opposed the legalization of bingo.