21.   The NHL is trying to tone down on-ice violence with stricter enforcement of slashing and high-sticking penalties.

22.   The move represents the stricter enforcement of an existing policy, according to Angela Vargo, a Southwest Airlines spokeswoman.

23.   The plan includes stricter enforcement of existing regulations and reducing the backlog of visa and immigration applications.

24.   The stricter enforcement of hand-checking this season has taken its toll.

25.   Then as now, college law-enforcement officials and administrators attributed the rise to stricter enforcement of laws rather than to more use of drugs and alcohol.

26.   They are already seeing higher fees and stricter enforcement of payment deadlines.

27.   Those issues include stricter enforcement of current gun laws and tougher jail and prison sentences for youthful offenders.

28.   With stricter enforcement, the report says, they could reduce the number of children working in foreign factories, often in dismal working conditions at substandard wages.

29.   But by late August, people had shifted to thinking stricter enforcement was a better way to reduce violence.

30.   But because of stricter enforcement of wildlife protection laws, the center now cannot slaughter or sell the animals.