172 Wis.2d 640, 494 N.W.2d 391 (1993)
(1) To the extent that they conflict, PKPA preempts the UCCJA. (2) PKPA prohibits a state court from exercising jurisdiction in any child custody dispute over which another state is currently exercising jurisdiction. (3) The state that initially enters a child custody determination has the sole prerogative to modify that determination, as long as the modification is valid under its own law and either the child or a contestant continues to live in that state.
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