The anti-immigration class across Europe has found many new adherents as of late, especially in the most economically devastated countries, like Greece and Italy. But now these Europeans might themselves become the unwelcome migrants, at least in Switzerland.
"Rightful liberty is unobstructed action according to our will within limits drawn around us by the equal rights of others. I do not add 'within the limits of the law' because law is often but the tyrant's will, and always so when it violates the rights of the individual." Thomas Jefferson
The root cause of the immigration problems in western Europe and the U.S. is rampant abortion, covered euphemistically by the term Zero Population Growth.
There simply aren't enough young, indigenous workers to supply the laror-related needs and desires of the populace.
Hence, the need to "import" laborers.
In that sense, we got lucky.
We're supplying our needs with Mexicans, a generally affable group, who work hard and appreciate the opportunity to do so.
Europeans, however, imported millions of Muslims who aren't particularly industrious except when building bombs with which to kill their hosts.