> It's hard to understand why in the US many people see it as norm. Immigration is the norm in the U.S. because the country’s entire history is built on immigr

> It's hard to understand why in the US many people see it as norm. Immigration is the norm in the U.S. because the country’s entire history is built on immigration, unlike the EU. I don’t know that undocumented immigration is the norm though. If you look at the history of any major city in the US, it is a history of demographic shifts based on immigration. That immigration had largely been from Europe since the 17th century (along with the forced migration of enslaved Africans). Only since the 1960s has there been large scale immigration from non-European nations. Over that history, each generation of assimilated Americans has looked down on newer immigrants and sought to limit or prevent their ability to remain and become citizens. The English settlers of the 1600s enslaved forced African migrants and they looked down on the German and Dutch immigrants who followed them. The English/German/Dutch who after a generation or two begin to think of themselves as American looked down on the immigrants from Scandinavia who began to settle the American midwest in the early 1800s. The nascent Americans fought numerous wars and skirmishes with Mexico until a new border meant that vast territory that was once Mexico was now the US and Mexicans were now foreigners in the US. Chinese workers were imported to the west coast as essentially indentured labor to built the railroads in the 1800s. The Spanish American War led to immigration from Puerto Rico, Cuba, and the Philippines. The assimilated Americans of the 1800s vehemently opposed the mass immigration of Irish people in the mid 1800s and the assimilated Irish in turn vehemently opposed the mass immigration of Italians in the late 1800s. Both groups worked to stop immigration from Poland in the 1920s, and it was then that the US enacted its first immigration restrictions. Those restrictions were relaxed in the late 1960s, which led to large migrations from South America, the Caribbean, and India. Immigration is the norm for the entirety of the US’s history. Also the norm (unfortunately) is each assimilated group wanting to prevent others who arrive after them from having the same opportunities that they did.