Anti immigrant nativists like to talk about the 'externalities' caused by immigrants.
Property owners must first be made liable for the externalities imposed by their guests ["illegal immigrants"]
The externalities argument cuts both ways though.
Immigration suppression laws impose enormous externalities such as :
Homeowners loss of sovereignty over their own property. There is nothing in the Constitution that gives the Federal government the power to regulate immigration.. Congress simply arrogated to itself this power almost a 100 years after the Constitution was adopted (similar to how Congress regulates drugs).
No distant bureaucrat can possibly make better decisions about who to hire, rent to, and invite onto our own property than we can.
Central planners simply cannot collect or process enough information to make better decisions than 330 million citizens, each acting individually in their own self-interest with their local knowledge.
Anti immigrant laws sharply reduce the supply of hardworking, high quality employees and increase their cost.
Past nativists blocked Jewish,Chinese, and Japanese immigration. All of those ethnic groups outperform white natives on a variety of dimensions. For example, Jews only make up 0.2% of the global population,yet have won 22% of all Nobel prizes.
I see no evidence that modern nativists are any more discerning.
History suggests that once governments have been empowered to suppress some hated minority, they soon expand that power over everyone else See the War on Terror, and War on Drugs.
Likewise.the USG uses the War on Immigrants to justify many authoritarian policies --internal passports, mass surveillance, border walls, KYC/AML, travel bans, etc.
Immigration suppression laws aid authoritarian regimes, by preventing their citizens from fleeing.
For example, had the nativist FDR administration not played border guard for Hitler, the 6 million Jews who died in Nazi gas chambers would have been able to flee to the US instead.
Relative to their population, Jews have made outsize contributions to industry, science, ad the arts. How many inventions, scientific discoveries, books, movies, and music were lost to the world due to the Nazis and US nativists?
The estimated losses caused by immigration suppression laws are staggering:
"A literature summary by Clemens (2011) estimates that free global labor mobility would increase gross world product (GWP), also called “world GDP”, by somewhere in the range of 67-147%. The estimates suggest that even partial liberalizations of migration could yield gains greater than the estimated gains from complete free trade or free capital flows.
...
Are [these gains] at least plausible? We can check these calculations on the back of the metaphorical envelope.Divide the world into a “rich” region, where one billion people earn $30,000 per year, and a “poor” region, where six billion earn $5,000 per year.
Suppose emigrants from the poor region have lower productivity, so each gains just 60 percent of the simple earnings gap upon emigrating—that is, $15,000 per year.
This marginal gain shrinks as emigration proceeds, so suppose that the average gain is just $7,500 per year.
If half the population of the poor region emigrates, migrants would gain $23 trillion—which is 38 percent of global GDP."
Consider: how much would you have to paid to voluntarily move to Venezuela?
GDP per capita (PPP) in Venezuela is $8,486.
GDP per capita (PPP) in the US is $85,373.
Let's assume that a Venezuelan who moves to the US can therefore expect to earn 1.5 times what they earn in Venezuela. The gains to immigration are therefore ~$4.5 K / Venezuelan / year.
Assume a working lifespan of 40 years. The lifetime gains from immigration are $180 K per Venezuelan.
Roughly ~20 million Venezuelans would like to immigrate to the US. Total gains to Venezuelan immigrants would therefore be ~$3.5 trillion.
As employers would not hire Venezuelans unless they were worth at least what they were paid, the gains to immigration for employers would be at least another $3.5 trillion.
So immigration suppression laws are causing at least ~$7 trillion in economic losses to Venezuelans and their would-be employers in the US.
Nativists rarely even acknowledge these negative externalities.
Yet if you want to hold those who hire immigrants liable for the externalities immigrants cause, isn't it only just that nativists be held liable for the externalities they cause as well?