Wall Street's concern about the U.S. Supreme Court's looming decision on President Obama's healthcare overhaul is overblown because the provision at the heart of the law already has little teeth, the top executive at Aetna Inc. said. The court in March will hear arguments on the part of the law that requires Americans buy insurance or pay a penalty, known as the individual mandate. A ruling is expected by the end of June. Some insurers have argued that a strong individual mandate is critical for the stability of the insurance pool by ensuring that healthy people buy insurance in addition to sick patients.
