Twenty-second Amendment to the United States Constitution
The amendment prohibits any individual who has been elected president twice from being elected again. Under the amendment, an individual who fills an unexpired presidential term lasting greater than two years is also prohibited from winning election as president more than once. Scholars debate whether the amendment prohibits affected individuals from succeeding to the presidency under any circumstances or whether it only applies to presidential elections.
African-American candidates for President of the United States
Major party African American candidates for President of the United States could not run in primaries until nearly the third quarter of the 20th century, after the passage of the Civil Rights Act (1964) and Voting Rights Act (1965) opened up political participation to blacks in the South. In addition, party changes to give more weight to candidates' performance in primaries, rather than to party leaders' negotiation in secret, opened up the fields. In 2008, Senator Barack Obama was elected the 44th president of the United States, the first African American to win the office.