51.   No one claimed responsibility, and the case remains unsolved.

52.   No arrests have been made, but federal authorities say the Amtrak case remains a top priority.

53.   No ransom was paid and the case remains unsolved.

54.   Or perhaps he received a notice, but forgot about it, and the IRS let the case remain dormant until now.

55.   Only five cases remain undecided from the session, which started last October.

56.   Other than that, the case remains very much a priority for the bomb squad.

57.   Robert Levy, a senior fellow at the Cato Institute, a libertarian think tank, says the case against Microsoft remains unproven.

58.   Seventy Rampart-related cases remain pending against the city.

59.   She suggested that Clinton veto any citizenship measure, if it comes to that, so the case can remain under INS jurisdiction.

60.   Six cases remain open.