Ayotte v. Planned Parenthood of Northern New England, Supreme Court of the United States, January 18, 2006 [remanding a US First Circuit Court of Appeals ruling which had struck down New Hampshire's parental notification law for teenage abortions because it did not contain a medical exception to protect the health of the minor]. Excerpt from the Court's opinion per Justice O'Connor:
If enforcing a statute that regulates access to abortion would be unconstitutional in medical emergencies, invalidating the statute entirely is not always necessary or justified, for lower courts may be able to render narrower declaratory and injunctive relief
Read the full text of the opinion. Reported in JURIST's Paper Chase here.