In the study the authors talk about “foreign operations”, but feel constrained by the Posse Comitatus Act (rotation / downtime). Something does not compute –
SnT
A Stability Police Force for the United States
Establishing security is the sine qua non of stability operations, since it is a prerequisite for reconstruction and development. Security requires a mix of military and police forces to deal with a range of threats from insurgents to criminal organizations. This research examines the creation of a high-end police force, which the authors call a Stability Police Force (SPF). The study considers what size force is necessary, how responsive it needs to be, where in the government it might be located, what capabilities it should have, how it could be staffed, and its cost.
This monograph also considers several options for locating this force within the U.S. government, including the U.S. Marshals Service, the U.S. Secret Service, the Bureau of International Narcotics and Law Enforcement Affairs (INL) in the Department of State, and
the U.S. Army's Military Police.
http://www.rand.org/pubs/monographs/MG819/
RAND STUDY
This project investigates the need for a U.S. Stability Police Force, the
major capabilities it would need if created, where in the federal government
it would best be headquartered, and how it should be staffed. In
doing so, it considers options based in the Departments of Defense,
Homeland Security, Justice, and State. The project was conducted
for the U.S. Army’s Peacekeeping and Stability Operations Institute
(PKSOI).
The MP Corps has the opposite problem: it has the capacity to
take on the task, and arguably it has the skills due to its efforts in Iraq
and Afghanistan. However,
its ability to maintain these skills during
periods when it is not engaged in large-scale stability operations is constrained
by the limits placed on its ability to perform civilian policing
functions by the Posse Comitatus Act. Without relief from this constraint, it could not take advantage of the opportunities provided by the hybrid staffing option to develop and maintain the needed skills.
http://www.rand.org/pubs/monographs/2009/RAND_MG819.pdf