US Secretary of Homeland Security Michael Chertoff talks to Al Jazeera's Sami Zeidan about his responsibility to protect the US mainland from terrorist attacks. The interview covers some of the controversial measures the US has adopted in its proclaimed international war on terror.

Secretary Chertoff answers some tough questions about the appropriateness of prolonged detentions without charge, moves to deny US residents constitutional rights and the future of the prison at Guantanamo Bay.