Congressman Stephen F. Lynch was first sworn in to the United States Congress in October 2001, following the passing of legendary Congressman John Joseph Moakley.

The son of Francis Lynch, an ironworker, and Anne Lynch, a postal clerk, Congressman Lynch was born and raised in the public housing projects of South Boston.

Upon graduation from South Boston High School in 1973, Congressman Lynch entered the Ironworkers Apprenticeship Program and later joined his father as a member of Boston's Ironworkers Local 7. He worked as a structural ironworker for 18 years and was eventually elected president of the Iron Workers Union, the youngest president in the history of the 2000 member union.

Congressman Lynch continued his education at Wentworth Institute of Technology on nights and weekends, earning a Bachelor's degree in Construction Management. He later received a law degree from Boston College Law School, was admitted to both the Massachusetts and New Hampshire Bar, and continued his advocacy for working people as a labor and employment attorney.

In 1994, Congressman Lynch was elected to the Massachusetts House of Representatives. After just fourteen months in office, he was elected to the Massachusetts State Senate in a special election. In the Senate, he served as Chair of the Joint Committee on Commerce and Labor. In 1999, he earned a Master's Degree in Public Administration from Harvard University's John F. Kennedy School of Government.

During his career as an ironworker, Congressman Lynch worked at the General Motors Plant in Framingham, Massachusetts, the General Dynamics Shipyard in Quincy, Massachusetts, and the U.S. Steel Plant in Gary, Indiana, all of which were either shut down or severely curtailed due to unfair foreign trade practices. Congressman Lynch's first-hand experience in seeing the effects of plant closings on American workers and local communities led him to focus on efforts to improve U.S. Trade Policy and protect American jobs.

In the 119th Congress, Congressman Lynch is a member of the Financial Services Committee, where he serves as Ranking Member of the Subcommittee on Digital Assets, Financial Technology and Artificial Intelligence and is a member of the Subcommittee on Capital Markets and the Subcommittee on Financial Institutions. 

On the Committee on Oversight and Government Reform, Congressman Lynch is a member of the Subcommittee on Delivering on Government Efficiency and the Subcommittee on the Military and Foreign Affairs.

Congressman Lynch is a co-founder of the Congressional Labor and Working Families Caucus, which was formed to protect workers’ rights and educate Members of Congress on issues that impact American families.

He and his wife Margaret continue to live in their lifelong hometown of South Boston where they raised their daughter Victoria and niece Crystal.