The 18th District spans 19 counties across central and west-central Illinois, ranging from McLean County (Bloomington-Normal) to Adams County (Quincy). LaHood serves close to 710,000 constituents.

Prior to his election to Congress, LaHood served four years in the Illinois State Senate, beginning in 2011. LaHood spent more than nine years as a State and Federal Prosecutor. From 2001-2006, he worked for the U.S. Department of Justice as an Assistant United States Attorney in Las Vegas, Nevada. LaHood has also served as an Assistant State's Attorney in Cook County and Tazewell County. From 2006 up until his election to the House of Representatives, he practiced with the Peoria law firm of Miller, Hall & Triggs.

LaHood's record throughout his public service has resonated a strong, conservative record, promoting economic development and fiscal responsibility. LaHood has been an outspoken advocate for creating a better business climate in Illinois to boost the state and national economy, to create jobs for Illinoisans.

LaHood currently serves on the House Ways and Means Committee after being selected by his colleagues in January of 2018. The Ways and Means Committee is the House's oldest committee and has jurisdiction over all taxation, trade and tariffs, and other revenue-raising measures. He serves on the Ways and Means Subcommittees on Tax Policy and Oversight.

In March of 2021, LaHood was appointed by House Republican Leader Kevin McCarthy to serve on the House Permanent Select Committee on Intelligence. The committee oversees the nation's intelligence agencies including components of the Departments of Defense, Homeland Security, Justice, State, Treasury and Energy. LaHood serves on the Counterterrorism, Counterintelligence, and Counterproliferation (C3) and the Intelligence Modernization and Readiness (INMAR) Subcommittees.

LaHood also serves on the House Democracy Partnership. He currently co-chairs the US-China working group, the U.S.-Brazil Caucus, the Digital Trade Caucus, the U.S.-Lebanon Friendship Caucus, the Congressional Bus Caucus, and the Congressional Soccer Caucus.

Recognizing the need for reform, LaHood has fought to increase transparency and promote ethical behavior. He looks to build a strong, pro-growth economy, while fighting to reduce a record deficit that threatens the future of our children and grandchildren.

LaHood, a third generation Peorian, graduated from Spalding High School. He earned a B.A. from Loras College and holds a J.D. from The John Marshall Law School. In 2013, he was selected as an Edgar Fellow, a program run by former Governor Jim Edgar, which highlights future Illinois leaders. In 2008, LaHood was recognized in Peoria as a 40 Leaders Under Forty award winner. An avid runner, he has completed five marathons.

Congressman LaHood and his wife Kristen currently reside in Dunlap and are the proud parents of three sons, McKay, Lucas, and Teddy.