1.   But he contended that hate crimes on campus have to be reported for law enforcement to help battle the problem.

2.   Douglas County law enforcement had helped in the investigation because the victims lived there.

3.   In both cases, stricter law enforcement might help.

4.   Studies indicate that automated traffic-signal enforcement has helped reduce accidents.

5.   His reasoning is seconded by officials in cities across the nation, who contend that aggressive police enforcement has helped keep crime down.