WASHINGTON, D.C. — Three House Republican committee leaders threatened on Tuesday to hold ActBlue CEO Regina Wallace-Jones in contempt of Congress, accusing the fundraising company of obstructing their investigation into its fraud-prevention practices.

Rep. Bryan Steil of Wisconsin, Rep. Jim Jordan of Ohio and Rep. James Comer of Kentucky wrote in the letter that they believed the company had withheld materials from congressional investigators. "There is considerable reason to believe that ActBlue may have deliberately withheld some documents to impede our investigation," they wrote.

The letter requested that Wallace-Jones provide documents and messages related to ActBlue's policies to prevent donations by foreign nationals and on the potential or actual use of ActBlue by foreign nationals to make political contributions. Steil, Jordan and Comer asked for compliance with existing subpoenas and the new document requests within two weeks.

ActBlue is a fundraising software company that processes grassroots contributions for Democratic candidates for elected office. The House Judiciary Committee, the House Oversight Committee and the House Administration Committee have been investigating allegations that ActBlue may have allowed individuals to make fraudulent political donations, including from foreign sources, for more than a year.

In July, House Republicans issued a subpoena to ActBlue for documents and communications following a report on staff departures from the company. A law firm working for ActBlue subsequently found that Wallace-Jones may have misled Congress about the company's vetting procedures to ensure donations did not unlawfully come from foreign citizens.

ActBlue said in a statement in early April that Wallace-Jones did not make false statements to Congress. Willfully failing to comply with a congressional subpoena is a federal misdemeanor, and violations are enforced by the Department of Justice.