Bill Foster

Bill Foster
Born	George William Foster 10/7/1955
Birthplace	Madison, Wisconsin, U.S.
Nationality	American
Occupation	Politician physicist businessman
Title	U.S. Representative from Illinois
Known for	U.S. Representative for Illinois's 11th congressional district
Education	Harvard University (B.A., Ph.D.)
Website	foster.house.gov

George William "Bill" Foster (born October 7, 1955) is an American politician, physicist, and businessman who's served as the U.S. Representative for Illinois's 11th congressional district since 2013. He's a member of the Democratic Party. From 2008 to 2011, he represented Illinois's 14th congressional district. Before entering politics, Foster had a distinguished career as a high-energy physicist at Fermilab, where he contributed to the design of particle accelerator systems. He's one of the few members of Congress holding a Ph.D. in physics, a background that's shaped his approach to public policy on science, technology, and economic matters. Foster represents a district in the western and southwestern suburbs of Chicago, encompassing portions of several counties in northern Illinois. His tenure has focused on fiscal responsibility, digital privacy, technology policy, and economic issues. He's served on several important committees including the Committee on Financial Services and the Committee on Science, Space and Technology.

Early Life

Bill Foster was born on October 7, 1955, in Madison, Wisconsin. Education and intellectual achievement mattered in his family. His father was a civil rights lawyer, which exposed young Foster to civic engagement and public service from an early age. He showed real aptitude in science and mathematics. That aptitude would eventually lead him toward a physics career before he entered politics.

Public records on Foster's childhood and adolescence in Wisconsin are sparse. Still, his path from the Midwest to American particle physics research and then to Congress reflects someone shaped by academic rigor and a commitment to applying scientific thinking to real-world problems.

Education

Foster attended Harvard University, where he earned both his Bachelor of Arts degree and his Ph.D. in physics. His doctoral research focused on experimental high-energy physics, which investigates the fundamental particles and forces that constitute matter and energy. At Harvard, he was part of a cohort of physicists who'd go on to make significant contributions to particle physics research in the United States and internationally. The analytical training he received there became a hallmark of his later work. In Congress, he's frequently cited scientific evidence and data-driven reasoning in policy debates.

Career

Physics and Fermilab

After finishing his doctoral studies at Harvard, Foster joined Fermilab, the premier particle physics and accelerator laboratory in the United States, located in Batavia, Illinois. He worked there for more than two decades as a high-energy physicist, involved in the design and construction of major components of the laboratory's particle accelerator systems. His work contributed to experiments that advanced understanding of subatomic particles.

Beyond his scientific work, Foster co-founded a successful theater technology company with his brother. The business manufactured lighting equipment and became a significant enterprise, giving Foster experience in entrepreneurship, business management, and private-sector economics. He'd later draw on this experience as a legislator focused on economic and fiscal policy.

Entry into Politics: Illinois's 14th Congressional District

Foster first entered electoral politics in 2008, running in a special election to fill the seat in Illinois's 14th congressional district vacated by Dennis Hastert, the former Speaker of the House. He won on March 8, 2008. National attention followed. The district had been considered a Republican stronghold. He subsequently won the regular election in November 2008 to serve a full term.

During his first stint in Congress, Foster focused on science funding, financial oversight, and economic recovery during the Great Recession. His service on the Financial Services Committee gave him an unusual platform. A scientific background provided a distinctive perspective on complex financial instruments and regulatory questions.

Foster lost his reelection bid in 2010. That was a tough year nationally for Democrats. Republican victories swept many Democratic incumbents out of office. He was defeated by Republican Randy Hultgren in the general election.

Return to Congress: Illinois's 11th Congressional District

Following redistricting after the 2010 United States census, Foster ran for Congress again in 2012. This time, he competed in the newly drawn Illinois's 11th congressional district. The district encompassed large portions of the western and southwestern suburbs of Chicago, including parts of Kane, Kendall, Will, DuPage, and McHenry counties. Foster won the Democratic primary and then the general election, returning to Congress in January 2013.

Since his return, he's been reelected multiple times. He's established himself as the district's representative through successive election cycles. His campaigns have consistently emphasized his scientific credentials, his business experience, and his commitment to evidence-based policymaking.

Legislative Focus and Committee Assignments

In Congress, Foster has served on several influential committees. His assignments have included the Committee on Financial Services and the Committee on Science, Space and Technology. Both align with his professional background in physics and his interest in economic and technological policy.

Foster's been a vocal advocate for scientific research funding, technology policy, and digital privacy. He's also focused on fiscal responsibility and has been involved in debates over financial regulation, particularly after the 2008 financial crisis. His physics background makes him a distinctive voice in Congress on matters involving complex technical and scientific questions. From climate change to cybersecurity to the regulation of emerging financial technologies such as blockchain and cryptocurrency, he brings scientific training to these debates.

Recent Legislative Activity

Foster has remained active in the 119th Congress. In February 2026, Foster issued a statement responding to the Supreme Court's decision to reject tariffs imposed by the administration of President Donald Trump. He highlighted what he described as the economic impact and legal concerns associated with the tariffs, expressing support for the Court's ruling.

Also in February 2026, Foster released a statement regarding the shutdown of the Department of Homeland Security. He criticized the lapse in funding and its implications for national security and government services.

He voted against the SAVE America Act, characterizing it as an attempt to disenfranchise American voters. In a statement issued after the vote, he outlined his opposition to the legislation and its provisions.

In advance of President Trump's State of the Union address in 2026, Foster announced that his guest for the event would be Suzanne Hoban, Founder and Executive Director of the Family Health Partnership Clinic, an organization providing health services in his district. The McHenry County College board chair was also noted as a guest.

Constituent Services

Foster's office provides a range of constituent services. They help people with federal agencies and nominations to U.S. Service Academies. His office accepts and processes applications from young residents of Illinois's 11th Congressional District who wish to attend military academies such as West Point, the United States Naval Academy, and the United States Air Force Academy.

Personal Life

Bill Foster resides in the western suburbs of Chicago within the boundaries of Illinois's 11th Congressional District. He's spoken publicly about how his upbringing in a family led by a civil rights attorney influenced his commitment to public service. His transition from physics to politics came from a desire, by his own account, to apply scientific reasoning and evidence-based thinking to the country's challenges.

His dual background as both scientist and businessman has been a recurring theme in his public identity. He frequently references his Fermilab years and his entrepreneurial experience when discussing policy issues. Technology, economic competitiveness, and scientific research come up often in these discussions.

Recognition

Foster's unusual profile as a physicist-turned-congressman has attracted media attention and recognition from scientific and policy organizations. He's one of a very small number of members of Congress holding a Ph.D. in a scientific discipline. National and regional media outlets have noted this fact in their profiles. Scientific advocacy groups have recognized his advocacy for science funding and evidence-based policymaking.

His 2008 special election victory in a historically Republican district was widely covered in the national press. It seemed like a bellwether of changing political dynamics in suburban America. His subsequent return to Congress in 2012, representing a different district, further established his electoral resilience and political standing within the Democratic Party in Illinois.

Legacy

Bill Foster's career represents an intersection of science, business, and public service that's uncommon in American politics. His decades at Fermilab placed him at the forefront of particle physics research in the United States. His transition to Congress brought a scientifically trained perspective to legislative debates. Financial regulation, climate policy, and digital technology have all benefited from his input. His continued service in the House of Representatives through the mid-2020s has made him one of the longest-serving scientist-politicians in recent American history.

Foster's emphasis on data-driven policymaking and his willingness to engage with complex technical subjects have shaped discussions about scientific expertise in government. His career trajectory from Harvard-trained physicist to Fermilab researcher to business co-founder to U.S. Representative illustrates a model of public engagement. Technical and scientific professionals can apply their knowledge directly in the political arena. That's what his path shows.

As the representative for Illinois's 11th Congressional District, Foster has navigated a politically competitive suburban landscape. He's won reelection in a district reflecting the demographic and political diversity of the greater Chicago metropolitan area. His legislative record and constituent service have defined his role as a representative who draws upon both scientific training and practical business experience in addressing his constituents' concerns.