Amtrak is receiving a $2.45 billion loan from the federal government to buy new trains that will be built in Hornel, upgrade tracks and make platform improvements along the busy Northeast corridor, the largest such loan ever by the Department of Transportation, officials announced Friday. Vice President Joe Biden, a champion of Amtrak who rode the corridor's trains almost daily during his more than three decades in the Senate, joined Amtrak officials and deputy transportation secretary Victor Mendez in making the announcement at the Wilmington, Delaware, station named for Biden.