While some changes to financial regulatory reform may be "legitimate," dropping the Volcker Rule all together would be a "huge mistake," Sen. Chris Dodd said Monday.

As chairman of the Senate Banking Committee, Dodd was the co-architect of the Dodd-Frank Wall Street Reform and Consumer Protection Act, which President Obama signed into law on July 21. But with the GOP having won control of the US House of Representatives and made gains in the Senate following the midterm elections, Republicans could seek to change the bill or repeal it all together.