

Where did you mention that.
In a separate comment about Switzerland specifically.
And don’t tell me it is because our immigration system is somehow strict.
Switzerland’s is.
I can move around Europe with a high likelyhood that nobody ever checks who I am.
Switzerland is not in the EU. Even so, “In Switzerland, 69.7% of the prison population did not have Swiss citizenship, compared to 22.1% of total resident population (as of 2008).”
“In 2010, a statistic was published which listed delinquency by nationality (based on 2009 data). To avoid distortions due to demographic structure, only the male population aged between 18 and 34 was considered for each group. From the study, it became clear that crime rate is highly correlated on the country of origin of the various migrant groups. Thus, immigrants from Germany, France and Austria had a significantly lower crime rate than Swiss citizens (60% to 80%), while immigrants from Angola, Nigeria and Algeria had a crime rate of above 600% of that of Swiss population. In between these extremes were immigrants from Former Yugoslavia, with crime rates of between 210% and 300% of the Swiss value.”
https://en.wikipedia.org/wiki/Immigration_to_Switzerland#Crime_rates
Call someone a coward and then scurry off to hide in your echo-chamber when proven wrong. Typical.