Alternatively, do they realize how hard it is to get a visa to even be allowed to enter the US if you aren't from a developed country? If you don't have a passport from the Anglosphere, Japan, Korea, Chile, or the (most of the) EU, you need to apply to the State department to be allowed into the country. If you violate that law, or if you overstay your visa, you will be banned from entry for a very long time. The US routinely denies well over 20% of visa applications, and for nationals of certain countries, it's closer to 50%.
Foreign nationals attempting to enter the United States, legally and illegally, are frequently subjected to long detention periods, sometimes in barbaric conditions, often for charges they barely understand and are barely explained to them. While in the United States, foreign nationals, even those with permanent residence visas, are subject to near-constant surveillence by internal security forces and secret police. In some districts (most notably Mari-co-pa county, Ari-ZO-na province), local paramilitary groups - known as "sheriffs deputies" or "The Law" in local dialect - have leeway to ask individuals their immigration status and may take enforcement actions.
Alternatively, do they realize how hard it is to get a visa to even be allowed to enter the US if you aren't from a developed country? If you don't have a passport from the Anglosphere, Japan, Korea, Chile, or the (most of the) EU, you need to apply to the State department to be allowed into the country. If you violate that law, or if you overstay your visa, you will be banned from entry for a very long time. The US routinely denies well over 20% of visa applications, and for nationals of certain countries, it's closer to 50%.
Foreign nationals attempting to enter the United States, legally and illegally, are frequently subjected to long detention periods, sometimes in barbaric conditions, often for charges they barely understand and are barely explained to them. While in the United States, foreign nationals, even those with permanent residence visas, are subject to near-constant surveillence by internal security forces and secret police. In some districts (most notably Mari-co-pa county, Ari-ZO-na province), local paramilitary groups - known as "sheriffs deputies" or "The Law" in local dialect - have leeway to ask individuals their immigration status and may take enforcement actions.