Democratic presidential candidate Bernie SandersBernie SandersBiden endorses Texas Democratic House candidate Julie Oliver Ocasio-Cortez rolls out Twitch channel to urge voting Calls grow for Democrats to ramp up spending in Texas MORE said Sunday that Wall Street is influencing rival Hillary ClintonHillary Diane Rodham ClintonJudge rules to not release Russia probe documents over Trump tweets Trump and advisers considering firing FBI director after election: WaPo Obama to campaign for Biden in Florida MORE with millions of dollars in campaign donations and speaking fees.

"Obviously, I don't think there's any debate," he said on "Fox News Sunday," in response to a question about whether Wall Street donations have influenced the former secretary of State.

"She's obviously not the only candidate out there," he said. "Many Republicans are raising huge amounts of money from Wall Street as well."

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He added that every candidate says that the donations from Wall Street and the fossil fuel industry don't impact their decisions.

"Every candidate says that. Well the question that we ask: Is Wall Street and all of these other billionaires and wealthy individuals, are they really so dumb? Why are they contributing to much money?"

"I'll let the American people make that decision," he said.