Catherine Marie Cortez Masto (born March 29, 1964) is an American lawyer and politician serving as the senior United States senator from Nevada, a seat she has held since 2017. A member of the Democratic Party, Cortez Masto served as the 32nd attorney general of Nevada from 2007 to 2015. Cortez Masto graduated from University of Nevada, Reno and Gonzaga University School of Law. She worked four years as a civil attorney in Las Vegas and two years as a criminal prosecutor for the U.S. Attorney's ...