Bill Foster

Bill Foster is a physicist and businessman who serves as the U.S. Representative for Illinois's 11th Congressional District, a seat he has held since 2013.¹ According to his official biography, before entering Congress he co-founded Electronic Theatre Controls.² He also worked as a high-energy physicist and particle accelerator designer at Fermilab, where his campaign says he was a member of the team that discovered the top quark.² He serves on the House Financial Services Committee, where he is the Ranking Member of the Subcommittee on Financial Institutions, and the House Science, Space, and Technology Committee.³ In the 118th Congress, he was appointed to the Speakers' Artificial Intelligence Task Force.⁴

Foster voted to provide Israel with support following the October 7 attacks and cosponsored the West Bank Violence Prevention Act of 2025, which opposes Israeli violence in the West Bank.¹ In 2024, he expressed concerns with how the Israeli government conducted the war in Gaza, calling the civilian death toll and humanitarian crisis unacceptable and not in accord with American principles.⁵ He opposes adding members to the Supreme Court, stating it would cause Republicans to do the same and make the legal system unstable.⁶

He voted for the Affordable Care Act and the American Recovery and Reinvestment Act of 2009.¹ He also voted for the Dodd-Frank Wall Street Reform and Consumer Protection Act, which included ten amendments he proposed.¹ In September 2026, he voted for the Ratepayer Protection Act and against a resolution to disapprove of California's harbor craft emissions rules.⁷