Janet Ann Napolitano (/nəpɒlɪˈtænoʊ/; born November 29, 1957) is an American politician, lawyer, and university administrator who served as the 21st governor of Arizona from 2003 to 2009 and third United States secretary of homeland security from 2009 to 2013, under President Barack Obama. She was named president of the University of California system in September 2013, and stepped down from that position on August 1, 2020 to join the faculty at the Goldman School of Public Policy. She was elected to the American Philosophical Society in 2018.