1.   ----- Did law enforcement fail to protect a young boy?

2.   But where local law enforcement fails, the federal government must intervene.

3.   But why did their neighbors, parents, teachers, and law enforcement failed to see the need to act?

4.   Federal prosecutors serve mainly as a backstop to seek justice when local law enforcement fails.

5.   When conventional law enforcement fails to stop the campaign of terror, Gen. Devereaux gets the president to declare martial law and turns Brooklyn into a police state.

6.   China often issues old rules as if they were new when enforcement of the existing regulations fails.

7.   The members of parliament who produced the report said dealing with the drugs problem by emphasising law enforcement had failed for decades.