Sens. Sherrod Brown, D-Ohio, and David Vitter, R-La., say they plan to introduce a bill that would address concerns about banks that are "too big to fail," partly by requiring large banks to hold more capital. Meanwhile, JPMorgan Chase CEO Jamie Dimon says processes need to be in place to allow banks to fail and that small banks are not the solution. "We've raised $7.5 trillion [in financing] for customers. We cannot be replaced by small banks," he said.