California Nullifies Federal Health Guidance

According to a Senate floor analysis and a Newsom press release, California enacted a late-session 'gut‑and‑amend' bill that freezes in current federal vaccine standards while stating the state will 'break from future federal guidance.' In effect, California is asserting state authority to ignore subsequent federal health agency updates. — This marks a leftward use of nullification-style tactics, signaling deeper state–federal fragmentation over public health and challenging longstanding partisan narratives about centralized authority.