McConnell Pessimistic That Congress Will Revamp Dodd-Frank

But Democrats have been vocal in resisting any changes to Dodd-Frank that they say will aid Wall Street, such as scrapping Volcker Rule trading restrictions and weakening the Consumer Financial Protection Bureau.

Crapo has previously said efforts to revise Dodd-Frank would be slow as most major bills require 60 votes to pass the Senate, and Republicans hold just 52 seats. The House is moving faster, with that chamber's Financial Services Committee approving legislation earlier this month that would alter many of the law's key provisions.

House Speaker Paul Ryan has said he wants the legislation to move to a floor vote as soon as possible.

Absent action by Congress, McConnell said rolling back Dodd-Frank will fall to the Trump administration. After a slow start, President Donald Trump has made progress in recent weeks in filling the agencies that oversee Wall Street with his own appointees.

Trump, who has called Dodd-Frank a "disaster," signed an executive order in February that required regulators to examine financial rules and issue a report on their findings. The Treasury Department is scheduled to release its review next month, kicking off what the administration has promised will be a broad rewrite of regulations implemented under Dodd-Frank.

Unless the situation in Congress changes, we will be "stuck with whatever the administration thinks it can do on its own to modify the impact of Dodd-Frank," McConnell said.