This joint resolution seeks to block a Medicare rule issued by the Centers for Medicare & Medicaid Services (CMS) that would implement prior authorization requirements for certain services under the Wasteful and Inappropriate Services Reduction (WISeR) Model. Using authority under the Congressional Review Act, lawmakers are formally disapproving this CMS rule, which was published on July 1, 2025, and had been confirmed as a "rule" subject to congressional review by a Government Accountability Office opinion issued May 12, 2026. If enacted, the resolution would nullify the rule entirely, meaning it would have no legal force or effect going forward. This action primarily affects Medicare beneficiaries and healthcare providers who would have been subject to new prior authorization procedures for select medical services designed to reduce wasteful or inappropriate care. The resolution was introduced in the Senate on May 19, 2026, and after being discharged from committee, was placed on the Senate calendar on June 9, 2026, for further consideration.