 U.S. President Joe Biden traveled to Pennsylvania on Monday to mark the Martin Luther King Jr. holiday by volunteering at a hunger relief organization, Biden arrived Phil Abundance in Philadelphia, where he chatted with volunteers as he helped to put bags of apples in boxes. The visit is the third year in a row for the president to work with the charity on MLK Day, which is often celebrated by offering service to the community, communities across the nation plan to celebrate the holiday on Monday, with events ranging from prayer services to parades, but a dangerously cold winter storm was limiting some planned activities.