We do not need their one billion people to move into the usa. You know that most of them are bound to move to the usa. They also have 50 million people out of work over there and 3/4 of the country still lives in poverty! Yet, despite having 50 million unemployed, they choose to lift their one child law. They think they have no obligations to their own unemployed, they just pass their unemployed on to other countries that dont need them - countries like england and America where the economies are not doing too good.
If anything, China supports the world's economies by manufacturing goods for cheap so that companies abroad can profit in their homelands. China wants to live like everyone else but to do so in their own way. The people are what ultimately decides what is right for them, if and when that's not, they will speak up.