Critical Infrastructures: Background, Policy, and Implementation [Updated February 17, 2005] [open pdf - 160KB]
From the Summary: "Following the events of September 11, the Bush Administration released two relevant Executive Orders (EOs). EO 13228, signed October 8, 2001 established the Office of Homeland Security. Among its duties, the Office shall 'coordinate efforts to protect the United States and its critical infrastructure from the consequences of terrorist attacks.' EO 13231, signed October 16, stated the Bush Administration's policy and objectives for protecting the nation's information infrastructure and established the President's Critical Infrastructure Protection Board chaired by a Special Advisor to the President for Cybersecurity (both of which were later abolished by an amending executive order). More recently (December17, 2003), the Bush Administration released Homeland Security Presidential Directive 7, reiterating and expanding upon infrastructure protection policy and responsibilities which remain relatively unchanged through two Administrations."
CRS Report for Congress, RL30153