That's irrelevant, though.

There are plenty of people who can program in C++ and speak English fluently, so there's almost no point in hiring someone who can't speak English

Most tech companies these days outsource their work to India (because that's where labor is very cheap), but the Indian people they hire can understand and speak English fluently (or close to fluently). Matter of fact, it is significantly cheaper to hire someone from India than it is to hire someone from Mexico (for example), regardless of the person's English skills. Plus, the quality of education in India is, generally speaking, much better than the quality of education in Mexico. All the more reason to hire an Indian person over a Mexican person who can't speak English. Hell, you're still better off hiring an Indian dude who can't speak English.

The odds are against you if you're Latino and can't speak English