Homeland Security Secretary Michael Chertoff will announce a major restructuring of his 180,000-employee department today, changing how the two-year-old agency handles intelligence, sets policy and manages key law enforcement operations in response to criticism that domestic security remains unfocused and poorly coordinated. Chertoff will realign agencies that secure the nation’s skies and police its borders, replace or reassign the duties of three of five undersecretaries, and emphasize missions such as increasing national preparedness and screening people and cargo before they enter the nation, congressional and department officials said. Full Story