In article ,
John Savard wrote:

Of course, currently, we don't have one world government. Therefore, we
have competing nations, each trying to be militarily stronger than its
neighbors, so it is very difficult to get countries to limit their
energy consumption and their population. If, fifty years ago, only one
out of every hundred families had gotten a permit to have one child, the
world's energy demands would be much lower.

Or the 99% of the population deemed unsuitable for reproduction
might have overthrown the WorldGov, since while they might risk death in
a messy civil war, their families will definitely be expunged under the
WorldGov Plan.

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http://www.cic.gc.ca/english/immigrate/
http://www.livejournal.com/users/james_nicoll