I believe this is likely to use the NSA's definition of a "US Person"
According to the National Security Agency web site, Federal law and executive order define a United States person as any of the following:
a citizen of the United States
an alien lawfully admitted for permanent residence
an unincorporated association with a substantial number of members who are citizens of the U.S. or are aliens lawfully admitted for permanent residence
Comments
I believe this is likely to use the NSA's definition of a "US Person"
According to the National Security Agency web site, Federal law and executive order define a United States person as any of the following:
a citizen of the United States
an alien lawfully admitted for permanent residence
an unincorporated association with a substantial number of members who are citizens of the U.S. or are aliens lawfully admitted for permanent residence
a corporation that is incorporated in the U.S.[1]
[1] http://en.wikipedia.org/wiki/United_States_person