1 CSX Transportation Inc., operates the largest railroad in the eastern United States with a 22,000-mile rail network linking commercial markets in 23 states, the District of Columbia, and two Canadian provinces.  UP - Union Pacific Railroad. Union Pacific Railroad is an operating subsidiary of Union Pacific Corporation. It is the largest railroad in North America, operating in the western two-thirds of the United States.
Chief Justice John G. Roberts, Jr., is the 17th Chief Justice of the United States; he has been the incumbent since 2005. All federal court judges, including Supreme Court Jus â¦ tices, are commission for lifetime appointments. The average tenure on the bench is 25.5 years.
U.S. Supreme Court Justice David Souter smiles after speaking during a dedication ceremony at the State Supreme Courthouse in Concord, N.H., on July 9, 2008. Supreme Court Justice David Souter is planning to retire at the end of the current court term. The vacancy will give President Obama his first chance to name a member of the high court and begin to shape its future direction. At 69, Souter is nowhere near the oldest member of the court.