US Supreme Court Justice Stephen Breyer delivered a very nice speech (in impressive French), March 7, 2011 at the invitation of the
Association Internationale de Droit Economique, in Paris (disclosure: I'm a member of that association). The title of the Seminar was "La prise en compte de l'Economique par la Cour Suprême des Etats-Unis, des cours supérieures européennes (CJUE, Cour de Cassation, Conseil Constitutionnel français, etc …)", thus, roughly, on the relevance of economics ("l'Economique", by that meaning, possibly, economic theories, models but also bare economic data) in taking legal decisions at the highest court instances, both in the US and France (but also, as other speakers covered, in Belgium).
This is my personal take on that intense speech.
Panel, Programme here , Video here .