Report on the Feasibility of Establishing National Guard Units in American Samoa and the Commonwealth of the Northern Mariana Islands [open pdf - 4MB]
"The National Guard Bureau (NGB) has completed its study into the feasibility of stationing National Guard units in American Samoa and the Commonwealth of the Northern Mariana Islands (CNMI). Establishing National Guard units in both territories is feasible; however, major steps are necessary to reach that endstate. Before any National Guard unites are established in either jurisdiction, the executive branches of the respective territories, in coordination with the Department of the Interior, must ensure the necessary authorizations for a militia are enacted in territorial law. [...] Force allocation across all states and territories is problematic. There are several costing frameworks to consider. Selecting the framework to transfer force structure from one state or territory to American Samoa or CNMI will have an impact on the donor state or territory's ability to accommodate the National Guard Bureau's 'Essential Ten' homeland capabilities. Additionally, converting USAR [United States Army Reserve] to National Guard may require a force structure swap and have a similar impact on 'Essential Ten' for the donor state converting to USAR."
National Guard: http://www.nationalguard.mil/