Philadelphia Mayor <a gi-track='captionPersonalityLinkClicked' href=/galleries/search?phrase=Michael+Nutter&family=editorial&specificpeople=4695146 ng-click='$event.stopPropagation()'>Michael Nutter</a> testifies during a hearing before the House Democratic Steering and Policy Committee January 16, 2013 on Capitol Hill in Washington, DC. The committee held a hearing to focus on 'Gun Violence Prevention: A Call to Action.'