<snip>With the obvious exception of China...
This is being relaxed http://www.bbc.co.uk/news/world-asia-china-24983007
I don't think it's because of any ethical concerns though, more a realisation that if economic growth is to continue at it's current rate they will need to replace an ageing workforce
edit a bit of context
The slow of the labor force growth in China is one of the consequences of the one child per couple policy in the 20th century. In addition, this could lead to a fast ageing of the Chinese population during the next 45 years and expected decrease in its working age population 
Chinese population planners always said the one-child program was a temporary measure to slow the growth rate and boost economic expansion. Now that they have made their targets, they can relax the one-child rule. It is hard to blame them for doing something
, with over a billion people--three times the population in the same land area as the US. And they knew what famines and the starvation of millions looked like....not pretty.
Abortion was never about US-style ethical or religious concerns, not in a country where looking at the wrong political websites can get you life in prison and embezzlement of public funds can get you the death penalty! The country could not afford more than x new babies per year, so the pregnancies that were not approved of in advance were gotten rid of. Even at 6 months!
Very straightforward. Very rational. Ethics was about not
producing babies that the society could not feed, educate and provide a job for. In that sense, the Chinese planners could argue that abortion was far more ethical than having babies that would reduce everyone's living standard.
The preference for sons skewing the population so much is the one factor they did not forsee. Millions of men without wives in the forseeable future.