11.   But the challenges of tracking people, especially without causing traffic jams at land borders, have hindered the effort.

12.   But the Ranger comeback effort was hindered by a penalty for too many men on the ice.

13.   But they admitted that the suspicions and ill-will caused by the presidential standoff could harden positions and hinder efforts to reach across party lines.

14.   By the same token, he said paying for upkeep on Busch Stadium also would hinder efforts to field a competitive team.

15.   Growers and scientists admit that a serious lack of knowledge has hindered efforts to diagnose and control the disease.

16.   Hilton is also asking the court to stop ITT from increasing the number of directors on its board, which could hinder its efforts to acquire the company.

17.   Japanese stocks fell, led by banks and other lenders, amid concern sluggish economic growth could hinder efforts to write off bad loans.

18.   Japanese stocks fell, led by banks and construction companies amid concern that sluggish economic growth could hinder their efforts to write off bad loans.

19.   Members of the Lambs of Christ and other opponents of abortion in Rochester wonder whether the killing of Slepian will hinder their efforts.

20.   Ms. Neumann conceded that the effort could be hindered by the new congressional spending limits.