Sean Patrick Duffy (born October 3, 1971) is an American politician, lawyer, and former reality television personality who has served as the United States secretary of transportation since 2025, under President Donald Trump.

[7] In 1997, Duffy appeared on The Real World: Boston, the sixth season of the MTV reality television show, and on Road Rules: All Stars, a Winnebago driving event, in 1998, where he met his future wife Rachel Campos.

[9] Duffy, a Republican,[10] was appointed Ashland County district attorney in 2002[11] to succeed Michael Gableman by Governor Scott McCallum.

[16] Different sources attribute his victory to his ten-month head start on Lassa's campaign, his grassroots organization and fundraising, his experience as a district attorney, and voter discontent with the economy.

[25] In 2013, Duffy and Democratic House member Michael Michaud (Maine) introduced a resolution calling for government action to ensure that people be provided with paper-based information along with electronic.

[27] Duffy supported President Donald Trump's 2017 executive order to impose a temporary ban on entry to the U.S. to citizens of seven Muslim-majority countries.

He stated that "President Trump is fulfilling a campaign promise to re-evaluate our visa vetting process so that the American people are safe from terrorism.

When Camerota, referring to the Quebec City mosque shooting, asked why Trump made no public statement on the white terrorists who perpetrated that act, Duffy replied, "I don't know, there's a difference.

[48][49] In December 2022 Duffy and Dagen McDowell were named co-hosts of The Bottom Line, a show on Fox Business which premiered on January 23, 2023.

[51] During his hearing on January 15, 2025, he stated that if confirmed, his first trip as transportation secretary would be to the Appalachian mountain regions of Tennessee and North Carolina, where flooding from Hurricane Helene damaged major interstate highways along with countless smaller roads and bridges.

[58] In his first act in office on January 29, Duffy signed a memorandum directing his department to immediately rescind and replace all existing corporate average fuel economy standards and eliminate the electric vehicle mandate.

[57][59] In an additional memo, Duffy ordered that Transportation Department-supported programs and activities "shall prioritize projects and goals that ... to the extent practicable, relevant, appropriate, and consistent with law, mitigate the unique impacts of DOT programs, policies, and activities on families and family-specific difficulties, such as the accessibility of transportation to families with young children, and give preference to communities with marriage and birth rates higher than the national average.

"[60] [61] On his first official day in office, Duffy responded to the 2025 Potomac River mid-air collision from the Federal Aviation Administration headquarters.

[62] Immediately following the accident, Duffy instructed an investigation be opened into the cause of the crash and ordered his department to "provide full support to the NTSB and all responding agencies and authorities.

[71] He is married to Rachel Campos-Duffy, a fellow alumna of The Real World and Fox News personality, whom he met when they were co-stars on Road Rules: All Stars.

On August 26, 2019, Duffy announced that because he and his wife learned that their ninth child would experience health complications, including a heart condition, he was resigning from Congress, effective September 23.