Here are two OAS links worth looking at:
http://www.state.gov/p/wha/rls/rm/2006/73727.html
and
http://www.oas.org/charter/docs/resolution1_en_p4.htm
Looks like you might have to dig a bit on the first one!
Hey Raster! Would you have any way of finding the thread article for hedgetrimmer? Thanks.