Clinton, who has faced criticism for her ties to the financial industry, vowed to fight for "tough new rules" and veto any legislation that attempts to weaken Wall Street regulations.

The Democratic presidential front-runner presented a three-part proposal for how she would treat Wall Street.

First, Clinton wrote, she'd create a "new risk fee" on the biggest financial institutions to discourage behavior that could jeopardize the broader economy.

"I would also ensure that the federal government has — and is prepared to use — the authority and tools necessary to reorganize, downsize and ultimately break up any financial institution that is too large and risky to be managed effectively," she added. "No bank or financial firm should be too big to manage."