I am a coward because I don't have the time to break down an economic model? Or am I a cowardly racist weasel because I don't swallow that immigration of individuals from less stable and progressive countries make the country to which they migrate, less stable and progressive?
If you want a relevant quote on why Cato arrived at their findings, maybe this will help "In another recent paper, this one looking at all costs and tax payments using a different survey, Cato again assigns the welfare costs of immigrants’ U.S.-born children to the U.S.-born. That study even excluded the roughly $200 billion spent educating these children. Of course we should educate the U.S.-born children of immigrants. But as is true of welfare, the impact on the education system must be considered when setting immigration policy. Any analysis that fails to do so does profound disservice to the public discourse.
Another important issue with Cato’s welfare approach is the decision to report the average dollar value of benefits rather than use rates. Because the SIPP does a better job capturing use of welfare than the amount recipients receive, Cato has to make various adjustments to the values in the SIPP. None of this means that reporting dollar amounts is a terrible idea. But it does mean that their results are dependent on all the assumptions they make."
https://cis.org/Oped/CIS-vs-Cato-Immigrant-Welfare-Whos-Right
In a separate comment about Switzerland specifically.
Switzerland's is.
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