To run for president in the United States, a candidate must meet specific eligibility criteria outlined in the U.S. Constitution. The individual must be a natural-born citizen, at least 35 years old, and a resident of the U.S. for at least 14 years. These requirements ensure that presidential candidates possess a sufficient understanding of the nation and its governance. Additionally, candidates often undergo rigorous campaigns to secure nomination from their respective political parties and reach out to the Electoral College for election.