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None. The Swiss don’t play around with their immigration laws. It’s very difficult to get a Green Card or become a naturalized citizen unless you have money or some legitimate skill to offer.

Your information about Switzerland is out of date. Switzerland has a migrant crisis.

From wiki:

There has been significant immigration to Switzerland since the 1980s. By contrast, during the 19th century, emigration from Switzerland was more common, as Switzerland was economically a poor country where a large fraction of population survived on subsistence farming.
The largest immigrant groups in Switzerland are those from Italy, Germany, Former Yugoslavia and Albania, Portugal and Turkey (Turks and Kurds). Between them, these five groups account for about 1.5 million people, 60% of the Swiss population with immigrant background, or close to 20% of total Swiss population.
The current federal law of December 16, 2005, on foreigners (the Foreign Nationals Act) came into force on January 1, 2008, replacing the Federal Act on the Residence and Establishment of Foreigners of 1931.[1]
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 western world.[2]

According to the CIA Factbook, Switzerland is now almost 5% Muslim.

Crime has gone up, and private firearms are being increasingly restricted.