TRB’s Airport Cooperative Research Program (ACRP) Report 66: Considering and Evaluating Airport Privatization addresses the potential advantages and disadvantages of implementing various approaches to airport privatization.

A growing number of states use private military and security companies (PMSCs) for a variety of tasks, which were traditionally fulfilled by soldiers. This book provides a comprehensive analysis of the law that applies to PMSCs active in situations of armed conflict, focusing on international humanitarian law. It examines the limits in international law on how states may use private actors, taking the debate beyond the question of whether PMSCs are mercenaries. The authors delve into issues such as how PMSCs are bound by humanitarian law, whether their staff are civilians or combatants, and how the use of force in self-defence relates to direct participation in hostilities, a key issue for an industry that operates by exploiting the right to use force in self-defence. Throughout, the authors identify how existing legal obligations, including under state and individual criminal responsibility should play a role in the regulation of the industry.

This report assesses domestic political support for internationalist foreign policy by analyzing the motivations of members of Congress on key foreign policy issues. It includes case studies on major foreign policy debates in recent years, including the use of force, foreign aid, trade policy and U.S.-Russia relations. It also develops a new series of archetypes for describing the foreign policy worldviews of members of the 115th Congress to replace the current stale and unsophisticated labels of internationalist, isolationist, hawk and dove. Report findings emphasize areas of bipartisan cooperation on foreign policy issues given member ideologies.