ROUGH CUT (NO REPORTER NARRATION)br br STORY: Vice President Joe Biden will lead an effort to craft policies to reduce gun violence in a plan by President Barack Obama amid calls for action after the massacre of 26 people, including 20 children, at a Connecticut elementary school.br br Obama has turned to Biden in the past to take a role in high-profile initiatives, including efforts on a deficit-reduction compromise with congressional Republicans in 2011.br br Biden's mission - to coordinate a strategy among government agencies in the wake of the Newtown, Connecticut shootings - comes days after the mass murder that has generated a national outcry for greater efforts to stem gun violence.br br Friday's massacre was the fourth shooting rampage to claim multiple lives in the United States this year.