◆ The U.S. Supreme Court on June 28 overturned the Chevron doctrine, endangering regulations in many areas, including Medicare.^[1] According to the Chevron doctrine—which comes from a 1984 Supreme Court decision—when a statute is ambiguous, courts are required to defer to the regulatory agency’s reasonable interpretation of the statute. In the new decision—Loper Bright Enterprises et al. vs. Raimondo, Secretary of Commerce, et al.—the Supreme Court ruled the opposite 6-3: “The Administrative Procedure Act requires courts to exercise their independent judgment in deciding whether an agency has acted within its statutory authority, and courts may not defer to an agency interpretation of the law simply because a statute is ambiguous.”