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.
Chief Justice Roberts is the 17th and current Chief Justice of the United States Supreme Court. He was nominated to the Supreme Court by President George W. Bush to replace Chief Justice William Rehnquist who died while in office.Chief Justice Roberts assumed the office of Chief Justice at the age of 50 on September 29, 2005.ehnquist became the Chief Justice of the Supreme Court five years later in 1986. Rehnquist was deeply respected by his fellow Justices and had a solidly conservative approach for the 33 years he was on the court.