21.   Bristol-Myers is trying to block the effort by winning its own approval for KS.

22.   But he said other members of his committee would insist on additional money, and Young said he might not have the votes to block those efforts.

23.   But it would scale back his proposed tax cuts and block efforts to make still deeper cuts for schools and hospitals.

24.   But it will be up to the new Cabinet members to break the political logjam that has blocked such efforts before.

25.   But management says the demands for a shutdown are blocking efforts to clean up the plant.

26.   But several imposing obstacles could block unification efforts, including the recent debt incurred by Wendover.

27.   But Surrogate Roth said that she tried internally to overhaul procedures a decade ago but was frustrated by a senior judge who blocked her efforts.

28.   But that effort was blocked by Robert Mosbacher, who was then secretary of commerce.

29.   But the Mexican Congress blocked his effort.

30.   But their efforts were blocked by State Department officials in Washington, who were unwilling to provide the money needed for the investigation.