Kent Cooper, the new executive director of the Center for Responsive Politics, a Washington, D.

CNN: Clinton Raises Money, Calls For Campaign Reform

"I think their goal was to circumvent disclosure, " said Kent Cooper of the watchdog group Center For Responsive Politics.

CNN: Moving Money Through State Capitals

Kent Cooper, a former official at the Federal Election Commission, suggests this could be just the beginning of Hsu's unintended impact on the Clinton campaign.

NPR: Clinton to Return Funds from Fundraiser Hsu