NEW ORLEANS — Standing on a wharf here, with the Mississippi River as a backdrop, President Obama on Friday once again expressed regret and frustration over the faulty website for the federal health insurance exchange, but reiterated that the flaws would be fixed and that the new law was working.

In a speech largely focused on economic issues as well as his disappointment with Congress, the president did not repeat his apology, made on Thursday in an interview with NBC News, for claiming that all Americans would be able to keep their insurance under the Affordable Care Act, an assertion he had repeated for years.

He also took a sly shot at Gov. Bobby Jindal of Louisiana, a Republican, who was in the audience, for being one of the governors who chose not to expand Medicaid coverage in their states.

“Even if you don’t support the overall plan, let’s at least go ahead and make sure that the folks who don’t have health insurance right now and can get it through an expanded Medicaid, let’s make sure we do that,” he said to a largely friendly crowd.