Justice Samuel Alito said in an interview that Congress does not have the authority to regulate the Supreme Court, pushing back against Democratic efforts to mandate stronger ethics rules for the justices. Alito argued that the Constitution does not give Congress the power to regulate the Supreme Court. While Chief Justice John Roberts has also questioned Congress’s ability to act, he was not as definitive as Alito. Some Democrats rejected Alito’s reasoning, arguing that the Supreme Court should be subject to checks and balances. The ethics push comes after recent revelations about undisclosed trips and other ethics issues involving several Supreme Court justices.
Using the same process, Congress could strip appellate jurisdiction from the SCOTUS in any case that involves a particular law. Which includes a law that they just passed.
The key is that when the SCOTUS reviews laws, it is nearly always exercising its power of appellate jurisdiction, not original jurisdiction. And the Constitution allows Congress to impose whatever regulations it wants over appellate jurisdiction. So if the SCOTUS isn’t allowed to hear cases involving a law, then it can’t strike down that law.