41.   But Web experts said enforcement was probably impractical in a country where the volume of Internet communications has exploded.

42.   Conservationists say there is lax enforcement of environmental laws by Egyptian authorities.

43.   Consumer advocates say any new law will need strict enforcement to be more than window dressing.

44.   Critics say the bill is so weak that enforcement would be sporadic at best.

45.   Conventional law enforcement was unable to bring the criminal to justice, so Stone killed him in cold blood, then died shortly afterward in the line of duty.

46.   Ecology officials deny enforcement is weak.

47.   Effective law enforcement is crucial to sustaining stable economic growth, Summers said.

48.   Enforcement also is a dilemma.

49.   Enforcement generally is negligible.

50.   Enforcement is bound to be a problem.