A coding challenge for someone with more GIS knowledge than I have: use the dataset behind this map https://hub.arcgis.com/maps/847cabe2dfc64f92918f2c282e3cedfb (number of households where Spanish is the primary spoken language by census tract) and see if you can find a location in the United States where you can travel 100s of miles in any direction without encountering a Spanish speaker.

Might be somewhere in Alaska, maybe?