The Supreme Court just ruled in favor of keeping a major part of Obamacare intact—specifically, the provision that lets a federal task force decide which preventive health services (like cancer screenings or vaccines) must be covered at no extra cost for millions of Americans. This means insurers can’t start charging for things like mammograms or cholesterol checks, at least for now.

The Supreme Court just gave HIV advocates a big win by upholding a rule that requires insurers to cover certain preventive treatments—like PrEP for HIV—at no cost. But there's a catch: the court also said the Health and Human Services secretary has the final say over which treatments get this coverage, leaving some uncertainty for the future.