Sen. Bernie Sanders (I-VT) on Wednesday night slammed the U.S. Supreme Court’s controversial Citizens United decision and supported legislation to overturn it.

Democratic Sens. Tom Udall of New Mexico and Michael Bennet of Colorado introduced a constitutional amendment on Tuesday that would overturn the ruling, which gave corporations and unions the ability to spend unlimited amounts of money to influence elections.

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Sanders told Olbermann he thought passing the constitutional amendment was possible, despite the inevitable opposition from conservatives.

“I think what we are seeing now, through the Occupy movement and other efforts, is a growing anger and frustration with the power of big money in this country. You’re seeing it just the other day, when people actually defeated the biggest financial institution in America, Bank of America, who wanted to impose the $5 debit fee. We beat em.”

“I think right now, whether you’re talking to a Republican or a progressive, people are saying that that Supreme Court decision, Keith, is basically insane,” he said. “Nobody that I know thinks that Exxon Mobil is a person.”

Watch video, courtesy of Current TV, below: