The January 6 committee deposed over 1,000 witnesses about Trump's 2020 election fraud scheme.
Seven House Republicans elected not to answer the committee's questions.
Defying this probe could empower Democrats to do the same when Republicans take control in 2023.
The highest profile holdouts include House Minority Leader Kevin McCarthy and House Judiciary Committee ranking member Jim Jordan of Ohio, who are vying to become House speaker and Judiciary chairman, respectively, in the next Congress after flipping control of the chamber this fall.
January 6 committee investigators are expected to pass along a slate of referrals about uncooperative witnesses to investigators at the Department of Justice, the House Ethics Committee, legal bar associations, and campaign finance watchdogs.