The only way that scenario works (Population control via chemtrails) is this:
-High level U.N. program
-Almost all countries are signatories and signed behind the scenes at Kyoto or some other environmental summit
-Junk science is used to justify the chemical mix (ie studies)
-Countries think they are protecting themselves from global warming (based on the studies supplied by the high level U.N. personnel)
-The top level U.N. person(s) are eugenicists
Atmospheric winds guarantee global coverage, even to countries who are not signatories.
I wonder if there are chemtrails in Israel, Saudi Arabia, North Korea, Iran? (Countries more unlikely to sign UN agreements)