Susan Collins of Maine, the ranking Republican on the Senate Homeland Security and Governmental Affairs Committee, said the State Department should immediately suspend the visas of all foreigners on the nation's broadest terrorist database, pending further review.

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In a statement, the State Committee for National Security of Kyrgyzstan sought to distance itself from the family.

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Other analysts say that even if Mr. Bo doesn't make it onto the Standing Committee, the party may borrow many of his ideas, which appeal in particular to the security forces, state-owned enterprises and other constituencies that see liberal reforms as a threat.

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