Welcome to Ca.
California store faces suit over no-Spanish language policy...
https://www.yahoo.com/news/california-store-sued-over-no-232825278.html
I remember going to Quebec in Canada... and there were area's of town where the neighbors would smash or spray paint over any storefront windows that wasn't written only in French.
Having to live and work alongside a large population that speaks a different language isn't a new problems that only plague the Southwest. Rather then walls, pie in the sky promises and outrage, I humbly suggest we look at how other countries are dealing with it. Then we can have a rational talk about what we're going to do.