If you're referring to a Government-imposed limitation on the number of allowed children and mandatory abortions, I would suggest that, sadly, a large number of people in the West already support that, and their sick rationale is all tied in with Socialist / Militant / Environmentalism.
A very unpleasant example of this is one that I ran across just before Christmas. There was an article in the UK's Daily Mail which told the story of a British family of I think 12, and it told of the particular steps and challenges that they deal with every year at Christmastime and other special events as relating to their large family size. It was actually a very nice, warm article that showed the tremendous love that they all had for one another and how they all worked together to help out and to make things work. It was also quite interesting to me because I come from a very small family and learning how this family undertook various logistical issues was eye-opening.
Anyway, after the article is the area for reader comments, and I was truly disheartened by the large number of people who took the time to write in and rip this fine family apart, mainly on the basis of because their family was so large they are consuming so many of the Earth's resources, they are consuming far more than they need, the Government should limit all families to one or two children, the family is so thoughtless and reckless, etc. etc. etc.
There are an awful lot of people out there who would enthusiastically support a Peking healthcare model. They are loud, shrill, inarticulate and, apparently, without any love for God in their hearts.