Final answer:
In the 2000 presidential election, the U.S. Supreme Court intervened due to the Democratic campaign's request for a manual recount, leading to George W. Bush's presidency.
Step-by-step explanation:
In the 2000 presidential election, the U.S. Supreme Court became involved because of a requested recount. The Democratic campaign wanted a recount done by hand. Following the initial count which showed Republican candidate George W. Bush slightly ahead, the Democratic candidate Al Gore, whose support was strong in largely African American precincts, called for a manual recount of the ballots. This led to legal disputes and a controversial decision by the U.S. Supreme Court, which effectively halted the recount. As a result, George W. Bush received Florida's electoral votes to become the forty-third president of the United States.