Elizabeth Warren grilled Treasury Secretary Jacob Lew on the Obama administration's opposition to breaking up the big Wall Street banks that are "too big to fail."

As a solution, Senators Sherrod Brown (D-Ohio) and David Vitter (R-Louisiana) introduced a bipartisan bill to break up the big banks and prevent future bailouts.

Warren pointed out that the largest financial institutions are getting bigger and bigger -- 30% larger than they were when they wrecked our economy.

She asked Treasure Secretary Lew, “How big do the biggest banks have to get before we consider breaking them up?” He had no answer.

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