PHOENIX — The federal government and not Arizona will run the insurance exchange required by the Affordable Care Act.

In a letter today to Health and Human Services Secretary Kathleen Sebelius, Gov. Jan Brewer said her administration had made "significant progress'' in planning and designing the exchange designed to provide coverage for the uninsured.

But Brewer said the federal government has not provided detailed regulations on a timely basis for Arizona and other states to make informed decisions on whether to provide their own state-based exchanges. She also said there have been delays in telling states when required services will be made available.

Brewer is not alone in deciding to opt out and let the feds run the program: More than a dozen other governors already have made such a choice.

The governor's decision essentially means it will be the federal government which will set up an exchange in the state. More to the point, that exchange will decide which insurers can sell plans to their citizens.

Read more of this story Thursday in the Arizona Daily Star and on StarNet.