Figures ... Well you can thank your national immigrant problem on the The Commonwealth and it's policies.
We don't have that benefit or burden in the USA.
One branch of my mother's family lives in Toronto now -- they emigrated after 1921. Canada was kind enough to accept them -- they came from Russia and later Argentina (c. 1970) -- neither country a part of The Commonwealth -- Canada needed them, Canada wanted people and labor.
The USA has a real legal immigrant CRISIS! Immigrants receiving Green Card legal status has grown from 0.1% in 1955 to 0.3% in 2012 (adjusted for total US population) ! TIPPLED
The USA does not have an (legal) immigrant crisis. I was in France the past 2 years on vacation. In London (a Commonwealth Nation) 2014. As well as often in Amsterdam. Western Europe does have a large minority of immigrant citizens. Europe, notwithstanding Commonwealth UK immigration, does seem to have immigrant issues -- for a lot of different reasons. Immigration from former European Colonies is one. Turkish immigration to Germany after WW2 is another.
So maybe, the USA is not really part of the "Western" worlds as you are defining it. A lot of US Americans are making immigration a 'talking point problem' and I don't buy it at all.