Troubled chickens come home to roost —by Derrick Z. Jackson INTERIOR SECRETARY Ken Salazar and President Obama say they will split up the Minerals Management Service to separate the arm that inspects and investigates the oil industry from the arm that last year collected $13 billion in royalties and fees from the industry. Both Obama and Salazar say this will ensure "there is no conflict, real or perceived.'' Splitting the agency means [...]