Project Summary: A wide variety of policies, laws, and other authorities (e.g., executive orders, presidential directives, etc.) provide the legal basis, direction, and legitimacy for the national homeland security program. These policies, laws, and authorities have expanded and evolved significantly since they first emerged in response to the bombing of the Alfred P. Murrah Federal Building in Oklahoma City in April 1995. Their original focus on domestic terrorism and domestic preparedness morphed almost overnight into a broader focus on homeland security and transnational terrorism following the attacks on the World Trade Center and the Pentagon on September 11, 2001. The PATRIOT Act was enacted less than a month after the September 11 terrorist attacks. It was the first, and possibly the most controversial, in a sweeping new package of federal homeland security legislation and executive actions. This package also included the Homeland Security Act of 2002 and a series of Homeland Security Presidenti