51.   But Robert C. Bonner, commissioner of the U.S. Customs Service, opposes the plan, calling it an open invitation to terrorists.

52.   But some of them are known to oppose their plans.

53.   But some parents and teachers opposed the plan, leading Superintendent John Stanford to ask the board to reconsider it.

54.   But some Hispanic leaders oppose the plan because it bars such workers from applying for citizenship.

55.   But the plan is opposed by Qantas Airways, the Australian carrier, which three weeks ago was thwarted in its proposed takeover of Air New Zealand.

56.   But the plan is strongly opposed by Russia as well as by Britain and France.

57.   But the Pentagon opposes the plan.

58.   But those plans are opposed by private competitors.

59.   But top sales officials opposed the plan, which the executives said was never adopted.

60.   But Turkey, a member of NATO, vehemently opposes that plan, fearing that the Europeans will one day use it against Turkey.