Warren makes presidential bid official with call for change

LAWRENCE, Mass. — Democratic Sen. Elizabeth Warren made her bid for the presidency official on Saturday in this working-class city, grounding her 2020 campaign in a populist call to fight economic inequality and build "an America that works for everyone."Warren delivered a sharp call for change at her presidential kickoff, decrying a "middle-class squeeze" that has left Americans crunched with "too little accountability for the rich, too little opportunity for everyone else." She and her b