Isabel Casillas Guzman is the Administrator of the Small Business Administration (SBA) in the United States, a position she has held since March 16, 2021, after being nominated by President Joe Biden and confirmed by the Senate. As a member of the Democratic Party, she focuses on supporting small businesses and fostering economic growth. Guzman has a strong background in small business advocacy and public service, having previously served as the Director of the California Office of the Small Business Advocate.