Any wonder why the 1800s US Government insisted on immigrants who were culturally the same as Americans?
Unfortunately, they didn’t. And controversial at the time.
There were NO restrictions by country of origin and few of any kind for most of the 1800s. Towards the end of the century restrictions were placed on Chinese and Japanese immigration.
It wasn’t till 1917 that major restrictions were put in place, and 1924 when the kind you speak of went in.