Mississippi Insurance Commissioner Mike Chaney, who has been the driving force behind the creation of a state-based exchange, got his answer from the feds: Sure can't.

The U.S. Department of Health and Human Services rejected the plan Thursday, making Mississippi the only state to have its exchange blueprint nixed by the federal government.

Instead, Mississippi will have a federal exchange, just like more than two dozen other states that balked at implementing the health law provision on their own.