To this day there has always been immigration to the US
Because we are the best..
It was rare in the United States prior to recent immigration from Southeast Asia.
No
The United States has always been a multicultural society and this is unique in a world where most nations are homogeneous societies.
According to the US Immigration Bureau, the majority of legal immigrants are Asians. The percentage of Asians has been increasing for the past ten years into the US.
The most recent state is Hawaii, founded in 1959.
The new immigrants threaten the primacy of the English language and will take jobs.
most of the 19th century (1800s)
God only knows.
Chicago has consistently had a high number of stabbings in the US. However, the overall rate of stabbings has been declining in recent years.
Late 19th Century immigration to the US would not have been possible with the US having a flexible and mostly welcoming attitude to immigrants. It also would not have been possible without the US having a need for immigrants to come in and work on reconstruction projects.