I wonder what percentage of them learned English in the early 1900’s? All of my grandparents came over from Norway back then. Both sets learned English pretty quickly, and spoke it in the home with their kids. Although my dad spent time as a kid working on an Uncle’s farm who mostly spoke Norwegian, so my dad was pretty fluent in it along with English. Now I have 20+ Spanish-speaking stations on my TV!
The other thing about the early 1900’s. The immigrants came here for a better opportunity and worked their butts off to do it. Now a large percentage of immigrants just feed at the public trough.