Specifically, by shutting down Act Blue. It's a repeat offender for allowing the d's to raise all sorts of money from foreign donors. It works by allowing you to "double-dip": you can max out a donation to individual candidates on your own and then go to Act Blue and donate to them...with the caveat that *they* donate the money to...the same candidate.

Highly bad. But that's not all they do. They also launder foreign money:

justthenews.com - Actblue bombshell dem money platform tells congress it didnt block

ActBlue, the massive online fund-raising platform for liberal causes, has informed Congress it did not automatically block donations made with foreign-bought gift cards until recently, a potentially significant revelation in an ongoing investigation into whether China, Russia, Iran or Venezuela routed illicit money to Democrat candidates.

House Administratrion Chairman Bryan Steil, R-Wis., whose panel oversees election integrity, told Just the News on Tuesday that ActBlue turned over documents under subpoena showing a major change in September to its donor verification policies designed to protect against illicit money flowing into political campaigns.

Foreign countries influence US elections, all right. Just not how the democrats say they do. Russian Facebook ad buys in the $1M range pale in comparison into what they can pour into ActBlue:

“While this is a positive step forward, there is still more work to be done to ensure our campaign finance system is fully protected from fraud and unlawful foreign interference," Steil told Just the News. "The documents provided to the Committee also confirm that ActBlue still accepted these concerning payment methods in July, a period when Democrats raised a record number of campaign money before implementing these safeguards.

Steil disclosed earlier this fall that his committee is investigating whether four foreign powers -- China, Russia, Venezuela and Iran -- used ActBlue to route illicit foreign money into Democrat coffers.

It strains belief that Kamala Harris was able to raise as much cash as she did "from the grassroots". Her cash more than likely came from soil other than the United States'.