I apologize if T.O.R is starting to look like a farm team for Soccernet, but I'll be damned if they aren't pushing out some great content lately. They just dropped this 2 part micro-doc about the lack of Hispanic players in American soccer. I asked a similar, yet different question, over a year ago so I guess this is the response.
There certainly are Hispanic players in MLS and US Soccer, but not nearly the amount that you would think given the nation's demographics. Part one is above, while part 2 can be seen at The Kin of Fish.