WASHINGTON — A plan to ban proprietary trading — once considered a long shot — is now almost certain to be enacted as part of a regulatory reform bill, thanks in part to a hearing Tuesday where Goldman Sachs Group Inc. executives came under withering allegations of betting against the firm's own clients.

When President Obama first endorsed the " Volcker Rule" in January, lawmakers were skeptical because many saw it as largely unrelated to the mortgage practices that spurred the crisis.

Subscribe Now

Access to a full range of industry content, analysis and expert commentary.

30-Day Free Trial

No credit card required. Access coverage of the securitization marketplace, including breaking news updated throughout the day.