While federal statute prevents HHS from allowing short-term plans to renew their policies without additional underwriting, the agency tucked a provision into the final rule that lets states allow issuers to sell a separate "renewability guarantee" that would cost only a percentage of a monthly premium and protect consumers from premium increases or coverage denials should they fall ill. Insurers had offered such renewability guarantees prior to passage of the ACA and several states already allow for the sale of...