The Supreme Court ruled 9-0 in favor of Northwest and against Rabbi S. Binyomin Ginsberg. The decision relies on pre-emption analysis associated with the Airline Deregulation Act. The opinion is moderately dense. Some analysis can be found at The Rabbi, the Airline, and the Supreme Court (my piece) and for deeper analysis read Ronald Mann’s piece, Opinion analysis: Justices hold “good faith and fair dealing” claim about frequent-flyer program preempted, at SCOTUSblog. Oh, and avoid any unpleasantness with an airline frequent flyer program, especially now, for you can be “excised” from the program.