Visa data is listed under non-immigrant tables. Generally that information isn't very useful because there's a regular and massive flow of people in and out of

Visa data is listed under non-immigrant tables. Generally that information isn't very useful because there's a regular and massive flow of people in and out of the country. What you probably want is to see the net migration rate. That factors in all people, citizen and noncitizen, staying minus leaving. That's here. [1] And here is the total population change. [2] Worldometers has both datums combined here. [3] If there was 0 immigration to the US, the population would still be growing at a solid rate. Demographic collapse lags fertility collapse by around 6 decades. That's the time it takes for the first generation (around ~20 years) to have poor fertility, to start dying. And at that point you start seeing stuff happen at a crazy exponential scale. Japan, for instance, is still yet to reach the final boss, since they only collapsed about 40 years ago. The problem with network based immigration is just a subset of the problem with large scale immigration in general. Reduced standards risk creating entirely separate communities that fail to integrate, imperiling the entire system of immigration. For instance Sweden was, at one time, arguably the most immigrant friendly country in the world. But a large influx of immigrants who failed to assimilate has turned Sweden into a country where the Sweden Democrats [4] are looking to become the dominant party. Various countries throughout Europe are seeing similar outcomes, even if to lesser degrees - Geert Wilders/PVV in the Netherlands, AfD in Germany, and so on. The reason employment visas are so limited is because ideally no company should be hiring foreign workers for jobs that could be done by a local worker. Otherwise you create a scenario where not only do you indeed create an underclass as companies just hire the cheapest most easy to exploit workers from anywhere en masse, but you also destroy your own labor force, economy, and ultimately country in the process of it as well. [1] - https://fred.stlouisfed.org/series/SMPOPNETMUSA https://fred.stlouisfed.org/series/SMPOPNETMUSA [2] - https://fred.stlouisfed.org/series/B230RC0A052NBEA https://fred.stlouisfed.org/series/B230RC0A052NBEA [3] - https://www.worldometers.info/world-population/us-population/ https://www.worldometers.info/world-population/us-population... [4] - https://en.wikipedia.org/wiki/Sweden_Democrats https://en.wikipedia.org/wiki/Sweden_Democrats