The George W Bush Presidency reshaped American politics through its policies and its use of executive power. This volume engages fundamental debates about the Bush (43) presidency’s expansive interpretation of executive power, primarily in foreign and national-security policy, but also more generally for leadership and policy making. It examines presidential elections and party realignments in the early twenty-first century and their consequences for White House policy-making. It analyses how the Bush administration pursued initiatives in faith-based programs and homeland security, and established organizational structures that would endure well beyond his presidency. The volume also examines how the Bush (43) presidency established an enduring legacy in American politics through the Supreme Court and the Office of the First Lady. It concludes with an assessment of how these many areas of executive action and influence continue to direct presidential governance. By examining their evolution, this volume reveals choices and constraints in American politics today that derive from President Bush’s leadership.