antr I don't know where you got the idea that Switzerland has the lowest level of immigration of the european countries....
"Switzerland and Australia, with about a quarter of their population born outside the country, are the two countries with the highest proportion of immigrants in the world"
It is quite large, although not in a way that really aligns with the rhetoric of the anti-immigrant parties like SVP. They are mainly attacking "culturally foreign" immigrants who fail to assimilate and don't share Swiss values, mostly meaning Muslims, and secondarily meaning poor eastern Europeans. But the majority of immigrants to Switzerland are "culturally close" and assimilate fairly easily. The two biggest groups are: German immigrants to the German-speaking region of Switzerland, and Italian immigrants to the Italian-speaking region of Switzerland. Yet somehow SVP posters don't indicate that Bavarians and Milanese are the invaders...
chli, you are correct. i wasn't that aware of those numbers. although i'm guessing a big bunch of those immigrants are western europeans, not "croatians". a french in geneva, or a german in zurich are immigrants, but the swiss are not "afraid" of/referring to that immigration. am i correct on that assumption?
"Switzerland and Australia, with about a quarter of their population born outside the country, are the two countries with the highest proportion of immigrants in the world"
https://en.wikipedia.org/wiki/Immigration#cite_ref-90