Jurisprudence Demonstrators in front of the Supreme Court during oral arguments in FDA v. Alliance for Hippocratic Medicine in March 2024 in Washington. Anna Rose Layden/Getty Images Sign up for  Executive Dysfunction , a newsletter that highlights one under-the-radar story each week about how Trump is changing the law—or how the law is pushing back. You’ll also receive updates on the latest from Slate’s Jurisprudence team. On Friday, the archconservative U.S. Court of Appeals for the 5 th Circuit issued a stunning nationwide injunction that directly affects one-fourth of all abortions in the United States. The opinion rejected an Food and Drug Administration regulation allowing people to buy mifepristone, a drug used for medication abortion and miscarriage management, by mail. This ruling applies nationally, even in states that haven’t banned abortion. On Monday, the Supreme Court issued a temporary hold , meaning that mifepristone can still be mailed—for now.…