Sen. Elizabeth Warren Elizabeth WarrenBiden's fiscal program: What is the likely market impact? Warren, Schumer introduce plan for next president to cancel ,000 in student debt The Hill's 12:30 Report - Presented by Facebook - Don't expect a government check anytime soon MORE (D-Mass.) is fundraising off a report that says Wall Street firms might freeze their campaign donations to Senate Democrats because of her attacks on big banks.

Reuters reported earlier Friday that officials from Citigroup, JPMorgan, Goldman Sachs and Bank of America met in Washington recently to discuss withholding political donations to Democrats unless Warren and Sen. Sherrod Brown (D-Ohio) shift their tones.

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“That kind of swagger is a warning shot,” Warren said in a fundraising blast. “They want a showy way to tell Democrats across the country to be scared of speaking out, to be timid about standing up, and to stay away from fighting for what’s right. Ok, they have taken their shot, but it will not work.”

Warren said “the big banks have issued a threat, and it’s up to us to fight back.”

She's hoping to raise $30,000 — the total amount of money that Democratic candidates could lose if the big banks withhold their donations — for Democratic Senate candidates.

“Now let’s be clear: $30,000 is a drop in the bucket to JPMorgan and Citigroup. Heck, JPMorgan CEO Jamie Dimon makes more than $30,000 in just a few hours,” Warren wrote.

“They can threaten or bully or say whatever they want, but we aren’t going to change our game plan,” Warren wrote.