Answer:
   
   If you examine the [5]Report of the Committee on Patrilineal Descent
   on the Status of Children of Mixed Marriages
   ([6]http://www.ccarnet.org/cgi-bin/resodisp.pl?file=mm&year=1983), you
   will see that, for the child of an interfaith marriage, merely having
   a Jewish parent is insufficient to make the child Jewish. Rather, the
   decision states that having only one Jewish parent gives the child a
   "presumption" of Jewish descent. The Jewish status, however, must be
   established through "appropriate and timely public and formal acts of
   identification with the Jewish faith and people."

Some parts © 2009 Advameg, Inc.