Should countries have open borders?

I understand your point, but I think you’re still treating what is fundamentally a policy and planning challenge as if it were an unavoidable consequence of openness itself. On the 2015 Europe example, while there were indeed pressures on some local systems, attributing that to “too much openness” is an oversimplification. Research on that period shows the highly uneven impacts across countries, the largely temporary pressures and the concentrated effects in specific regions and sectors rather than systemic collapse. In other words, it was not “open borders failing,” but a migration shock into unevenly prepared systems. On the “talent vacuum” argument the issue is not freedom of movement itself, but structural inequality between countries. Restricting movement does not solve the root causes wage gaps, weaker healthcare systems and also lack of investment And even in more open systems, skilled migration is naturally constrained by practical factors like job availability or language. On infrastructure constraints its true that cities cannot scale instantly but that is an argument about planning capacity, not against mobility itself. Countries already manage population growth, urbanization, and migration through housing policy or public investment. So the problem it’s not “open borders = instant collapse,” but how well systems adapt to change. your argument assumes restricting mobility is the best way to protect development in poorer countries but that risks limiting individual freedom and locking in inequality rather than addressing its causes

We've also seen how badly, especially with the Biden Administration, migration can get. Undocumented immigrants have comitted crimes and went unpunished. That's not protecting our country, as should be done at the border, that's abandoning it. As I touched on before, Migration employment sitting at 72.3% shows both scale of movement, alonv with the need for careful intergration policies. Those policies were not made under Biden, rather under Trump. Trump enacted stricter border crossing protocols, enacted laws that kick out illegal aliens, begun the lawful deportation of illegals who entered our country without proper documentation, along with many other things. That is the limits to open borders that other countries need. That's how you protect social stability and match immigration with economic stability/efficiency.