1.   The international agency polices the development of atomic energy facilities.

2.   However, it may be difficult for state agencies to police the boundaries.

3.   On the one hand, the agency polices the borders and airports, arrests criminals and expels illegal immigrants.

4.   State agencies cannot police it in the way that they do books, newspapers or broadcasting.

5.   Yet the federal government relies on a small, underfunded and understaffed agency to police a powerful and wealthy industry.