James Pasco, executive director of the Fraternal Order of Police, the nation's largest law-enforcement labor organization, said that while he holds Mr. Kerlikowske in high regard, police officers are wary.

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Even so, the fight will be difficult in both chambers, especially the House, where increasing numbers of district lines are drawn to protect incumbents, said James Pasco, executive director of the Fraternal Order of Police.

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Proceeds from the single will benefit the New York Firefighters Disaster Relief Fun and the New York Fraternal Order of Police.

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