User blog comment:Scrawland Scribblescratch/England vs America/@comment-4822327-20140113042326/@comment-4822327-20140113214624

From a population standpoint, China is populated like a developing country and reproduces like a developing country, even though they are for a good part developed.

America is populated like a developed country and reproduces like a developed country.

There is simply a larger population that will not slow it's growth.