A senior House Republican has accused ActBlue, the Democratic Party's main online fundraising platform, of acting as a "money laundering operation" for funnelling millions in alleged foreign donations, as congressional investigators say multiple people linked to the group have invoked their Fifth Amendment rights during questioning. Rep. Pat Fallon claimed ActBlue's fraud-prevention safeguards were "severely lacking", pointing to a former policy that did not require CVV verification on some card donations, which he called a "huge red flag." ActBlue rejected the allegations as politically motivated, arguing the probe is part of a wider Republican effort to undermine Democratic fundraising ahead of the midterms.

Three House committees — Administration, Judiciary, and Oversight and Government Reform — are jointly investigating ActBlue over its fraud-prevention practices and claims of illegal foreign contributions. Sources say ActBlue co-founder Matt DeBergalis and board member Kimberly Peeler-Allen both pleaded the Fifth in separate depositions, while an April committee report found ActBlue's entire legal and compliance team had resigned, been fired, or gone on extended leave by March 2025. ActBlue insists it has raised record midterm-cycle donations from over a million new donors, averaging just $36 each, and denies any wrongdoing, calling the investigation "political retaliation."