(1) A court of this state shall treat a foreign country as if it were a state of the United States for the purpose of applying this part.
(2) Except as otherwise provided in subsection (c), a child-custody determination made in a foreign country under factual circumstances in substantial conformity with the jurisdictional standards of this part must be recognized and enforced under this part.
(3) A court of this state need not apply this part if the child custody law of a foreign country violates fundamental principles of human rights.