Commenter jgshapiro asks, apropos a recent case that used the term,

A side note, but when is the last time you heard a judge refer to someone as a "Jewess"?

Well, if you do a Westlaw search for the term, the immediately preceding case is In re B.C., 680 N.E.2d 1355 (Ill. 1997), with the following notation in the list of amici (granted, seemingly put there by West Publishing and not by the court):

Gary Feinerman, Mayer, Brown & Platt and Jenner & Block, Chicago, for the American Jewess Congress.

And, yes, it's that way in the printed reporter.