Sean Patrick Duffy is the 20th United States Secretary of Transportation, a position he has held since January 28, 2025.[1][2] Born on October 3, 1971, in Hayward, Wisconsin, Duffy comes from a large Irish Catholic family as the tenth of eleven siblings.[2][5] He earned a bachelor's degree in marketing from St. Mary's College of Maryland and a Juris Doctor from William Mitchell College of Law in 1999.[2] Before entering politics, Duffy gained national recognition as a professional lumberjack athlete, becoming a two-time world champion in the 90-foot speed climb and a three-time champion in the 60-foot climb.[3] He worked his way through law school by performing in lumberjack shows and exhibitions across Wisconsin and the country. Duffy also appeared on MTV's "The Real World: Boston" and "Road Rules: All Stars," where he met his wife, Rachel Campos-Duffy. The couple has been married for 25 years and has nine children together, making them America's first and longest-married reality television couple.[2][4] Duffy's legal career began as a special prosecutor in Ashland County, Wisconsin, before being appointed district attorney in 2002, a position he held until 2010.[2] During his tenure, he brought over 100 cases to trial with a success rate exceeding 90% and was particularly dedicated to prosecuting child sex crimes.[4] In 2010, he was elected to the U.S. House of Representatives, representing Wisconsin's 7th congressional district until 2019.[1][2] During his nearly nine years in Congress, he served on the House Financial Services Committee and co-chaired the Great Lakes Task Force, focusing on financial services and economic policy. He was the lead sponsor of PROMESA, legislation addressing Puerto Rico's debt crisis.[2] After leaving Congress, Duffy co-hosted "The Bottom Line" on Fox Business Network starting in 2023.[2] Following his appointment as Transportation Secretary, he additionally began serving as acting NASA administrator on July 9, 2025.[2][5]