Sen. Sheldon Whitehouse (D., R.I.) called Charles and David Koch part of a group of "creepy billionaires" who helped write the White House's 2019 budget on Tuesday.
With Trump administration budget director Mick Mulvaney on hand to testify about the White House's 2019 budget request, Whitehouse didn't ask any questions but did rip into the budget process as "ridiculous."
"This budget is going no place," he said. "We all know that. It was cooked up in the laboratories of the Koch brothers and a bunch of other creepy billionaires who want to remake America in Ayn Rand's image."
Whitehouse added it was "completely out of step" with the funding bill President Donald Trump signed this month.
The Koch brothers, billionaire industrialists and philanthropists, are often vilified by the progressives as an example of big money's exorbitant influence over conservative politics.