Congressional investigators are seeking documents and communications from the firm that provides fraud detection services to ActBlue, the latest move in the House Republicans’ probe into the progressive donor platform. 

The demands are included in a joint letter sent to the firm Sift, from House Administration Committee Chairman Rep. Byran Steil, R-Wis., and Ohio GOP. Rep. Jim Jordan, chairman of the House Judiciary Committee. 

The letter is the latest in a congressional probe into ActBlue, which the lawmakers say is the subject of “urgent concerns” about potential illegal foreign donations to U.S. political campaigns. 

“According to recent reporting, ActBlue, a major online political fundraising platform, has maintained poor anti-fraud practices that have allowed bad actors to make fraudulent political donations, including from foreign sources,” the chairmen wrote. 

“Fraudulent political donations corrupt American elections and could amount to interstate criminal conduct,” they also said.

According to ActBlue’s most recent privacy policy, which expired on August 19, the company contracted with Sift to provide fraud detection and prevention services. According to its website, Sift is an AI-powered fraud service for digital businesses. 

“Because Sift has provided ‘fraud detection and prevention services’ for ActBlue, we write to request your cooperation with our oversight,” the chairmen wrote to the company. 

House Republicans recently expanded their probe into the ActBlue platform, investigating whether four foreign adversaries – China, Iran, Russia and Venezuela – have funneled money into Democratic Party campaigns in 2024, Just the News previously reported.

ActBlue has steadfastly denied any wrongdoing but says it has been cooperating with ongoing investigations.