HHS Secretary Alex Azar (Photo by Tasos Katopodis/Getty Images) The U.S. Department of Health and Human Services on Friday released a final rule requiring the agency to review its regulations once every ten years. If a regulation is not reviewed, it may expire, said HHS. The Securing Updated and Necessary Statutory Evaluations Timely, or "SUNSET," rule, means that rules that are issued by an HHS component that are more than ten years old will need to be reviewed within five years. "By terminating burdensome regulations unless their necessity is publicly demonstrated to the American people, our SUNSET rule will prove the boldest and most significant regulatory reform effort ever undertaken by the federal government,” said HHS Chief of Staff Brian Harrison.