[Tade0]

The Swiss ~voted~ proposed a vote on limiting the population number citing carbon emissions. Truth be told the largest groups of immigrants there are Portuguese, Germans and Italians, so if anything it's the other way around considering what kind of energy mix Switzerland has.

That being said I think countries should deal with their population issues on their own instead of relying this heavily on imported workforce.

France was largely successful at keeping their fertility rate only slightly under replacement, so it is possible.

Edit: Can't confirm if the referendum was ultimately scheduled.