Canada border is drug war's second front

PLATTSBURGH, N.Y. | The world's longest undefended border: It's a catchy yet increasingly imprecise term for the U.S.-Canada frontier, as authorities on both sides ratchet up efforts to curb bustling traffic in illegal drugs and guns. The U.S. Border Patrol has tripled the number of agents along the 5,500-mile stretch in recent years, with hundreds more soon to be deployed.

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