Mary Landrieu

Mary Landrieu
Official portrait, 2009
United States Senator from Louisiana
In office January 3, 1997 – January 3, 2015
Preceded by	J. Bennett Johnston
Succeeded by	Bill Cassidy
Senate positions Chair of the Senate Energy Committee In office February 12, 2014 – January 3, 2015 Preceded by Ron Wyden Succeeded by Lisa Murkowski Chair of the Senate Small Business Committee In office January 3, 2009 – February 12, 2014 Preceded by John Kerry Succeeded by Maria Cantwell
Treasurer of Louisiana
In office January 1, 1988 – January 8, 1996
Governor	Edwin Edwards Buddy Roemer
Preceded by	Mary Evelyn Parker
Succeeded by	Ken Duncan
Member of the Louisiana House of Representatives from the 90th district
In office 1980–1988
Preceded by	Clyde F. Bel Jr.
Succeeded by	Mitch Landrieu
Personal details
Born	Mary Loretta Landrieu (1955-11-23) November 23, 1955 (age 69) Arlington County, Virginia, U.S.
Political party	Democratic
Spouse	Frank Snellings ​ (m. 1988)​
Relations	Mitch Landrieu (brother)
Children	2
Parent	Moon Landrieu (father)
Education	Louisiana State University (BA)
Signature
Mary Landrieu's voice Landrieu chairs a hearing on the Small Business Jobs Act of 2010 Recorded October 18, 2011

Mary Loretta Landrieu (/ˈlændruː/ LAN-drew;^[1] born November 23, 1955) is an American entrepreneur and politician who served as a United States senator from Louisiana from 1997 to 2015. A member of the Democratic Party, Landrieu served as the Louisiana State Treasurer from 1988 to 1996, and in the Louisiana House of Representatives from 1980 to 1988.

Landrieu came to national attention in the wake of Hurricane Katrina in 2005 after she publicly criticized the federal response to the natural disaster. Her opposition to the public option played a major role in the crafting of the 2010 Affordable Care Act, since she did not agree to support it until additional concessions were granted to support Louisiana's Medicaid system. In 2011, she became a cardinal (chair) of the Senate's Homeland Security Appropriations Subcommittee. She chaired the Senate Committee on Small Business and Entrepreneurship from 2009 to 2014, and chaired the Senate Committee on Energy and Natural Resources from 2014 to 2015. As of 2025, Landrieu is the most recent Democrat to serve in the U.S. Senate from Louisiana.