I have a message for Mr. Trevino: We in Texas expect all Spanish-speaking only kids to come here and learn the language [be able to read, listen to, write, and speak it] within 3 years. Surely your adult drivers can handle it well enough after one year. Sign ‘em up for English courses.
I have met Mexicans who have been in Texas for 15 years and they still can’t speak English. They live in Spanish speaking neighborhoods and work with other Mexican and they make no effort to learn.