By ANN SANNER, Associated Press Writer Ann Sanner, Associated Press Writer – 6 mins ago WASHINGTON – Calling on Americans to volunteer, President Barack Obama signed a $5.7 billion national service bill Tuesday that triples the size of the AmeriCorps service program over the next eight years and expands ways for students to earn money for college. "What this legislation does, then, is to help harness this patriotism and connect deeds to needs," said Obama, a former community organizer in Chicago. "It creates opportunities to serve for students, seniors and everyone in between," he said. "And it is just the...