I see this sort of reasoning a lot:
Quote:
"Few of their children in the country learn English... The signs in our streets have inscriptions in both languages... In short, unless the stream of their importation could be turned... they will soon so outnumber us, that all the advantages we have, will not in my opinion be able to preserve our language, and even our government will become precarious."
Quote from Benjamin Franklin, writing in 1753 in opposition to the immigration of Germans into Pennsylvania.