The U.S.A. and several other first world nations (to my knowledge) have policies in place preventing crops from being grown at maximum production rates/acreage.
I'm under the impression that first world nations (U.S.A., Britain, Japan, etc) have a near flat population growth curve. It is the up-and-coming third world nations that encourage massive overpopulation (China, Africa, India, etc).
If these nations cannot produce enough food to feed their own populations, let them starve and their societies collapse. Problem solved. Darwinism at it's finest, and it keeps the first world nations in a social/cultural position of preeminence.
As an alternative, repeal the policies keeping first world farms from producing the wanted crops and selling them to anyone who wants to buy. However, that would require Politicians to admit there was something they or their predecessors screwed up. Good Luck!
As a side note, China doesn't need too much help reaching a Malthusian solution. Check the male to female ratio in China.
http://www.cbc.ca/news/health/story/2011/03/14/sex-selection-china-india.html
People this irresponsible frighten me.