Margaret McKeown, born May 11, 1951, has served on the Ninth Circuit since 1998. Based in San Diego, she helps shape federal appellate law.
The 9th U.S. Circuit Court of Appeals has issued a 2-1 ruling on mandatory detention, with a Trump-appointee in the majority, deepening a circuit split and signaling the Supreme Court will likely weigh in. The decision expands detention to a broader set of immigrants, contradicting prior practice and prompting fresh lawsuits.