Law Commons^™

The Twin Aims Of Erie, Michael S. Green

Faculty Publications

We all remember the twin aims of the Erie rule from first-year civil procedure. A federal court sitting in diversity must use forum state law if it is necessary to avoid 'forum shopping" and the "inequitable administration of the laws." This Article offers a reading of the twin aims and a systematic analysis of their proper role in federal and state court. I argue that the twin aims apply in diversity cases not because they protect state interests, but because they serve the federal purposes standing behind the diversity statute. So understood, they are about separation of powers, not federalism. …