Number of languages spoken in the U.S.: 337
Those languages indigenous to the U.S: 176
Those that are immigrant languages: 149
There are 14 million households in the United States where English is not the primary language.
While English is spoken by the vast majority of the population and serves as the de facto official language in which government business is carried out, English is, nevertheless, an immigrant language, inherited by British colonization.
If you go to Wallyworld in Maine, New Hampshire or Louisiana, you are just as likely to have your change counted back to you in French as you are English. In the Upper Peninsula town of Han****, MI they have dual English-Finnish street signs and Finnish is widely spoken there. Also in the UP there is a language called Yooper. Good luck with that. It's an amalgamation of five different languages, English, German, Swedish, Norwegian, and Finnish. There are places in New Jersey and New York where you are more likely to be addressed in Italian than English.
Until 1836, Texas was Mexico. Between 1836 and 1845 Texas was its own country.