Erin Yang, a spokeswoman for the National Association of Insurance Commissioners, said the organization is concerned the president’s extension “could potentially be pretty damaging.” The organization worries that changing the rules so late in the game — when rates and plans for next year are already set — could create uncertainty and disruption in the market, Yang said.

Some states, however, jumped at the opportunity to re-enroll people in their old plans. Florida’s insurance commissioner said the state would allow the change, and Florida Blue, the state’s largest insurance carrier, announced it would send new letters to the 300,000 people who received cancellation notices and offer to extend their old coverage.

Ohio and Kentucky’s commissioners also said they would allow the change, but mentioned it would be up to the insurers themselves whether to reach out to people with canceled plans and offer them renewal.