INTERIOR: Official plays peacekeeper as agencies converge at U.S.-Mexico border Jennifer Yachnin, E&E reporter Published: Tuesday, March 25, 2014 Policing the nearly 2,000-mile southern U.S. border is a complicated scenario for federal agencies. Please subscribe to Greenwire to read the full story. Username: Password: Forgot your access codes? Recover them. Not a subscriber? Sign up for a trial. Ready to subscribe? Click here.