The UK apparently has enacted a law that requires spouses to have English proficiency before immigration. This is a good idea and in theory is practiced by the USA for citizenship. However, in reality this is not applied and many times people granted citizenship can not speak English.
Oddly if this were applied in the USA the usual suspects would scream racism. Yet oddly countries like Ghana, Nigeria, the Philipinnes and Israel would have little issues with this new law.
The reality of this law is that sometimes mothers of young United States Citizen children can not speak English. The other day I had to conduct an interview in French which was the persons second language because they did not speak English. This person has been in the USA since the 80's. Providing social services in other languages has not helped this person learn English. Nor has being a parent to multiple US Citizen children helped this person gain fluency.
If we had responsible governance we would start to look at this area. Americans should not hold their breath waiting for the Obama administration to do anything in the area of immigration until after 2010