People do indeed have natural skills they are born with; they learn how to apply those natural skills as they grow and develop into adults.<quoted text>
First, skills are acquired. You are not born with skills.
Second, someone who speaks Spanish (as their native language) makes them a token, otherwise you would have not used the requirement it be their native language.
So it would seem that you would discriminate against me because I am not Hispanic, yet I can speak Spanish and some broken Japanese.
I prefer someone who speaks Spanish (or whatever other language) as their native tongue because they also are more likely to be fluent in the nuances of dialects/slang/etc and have a greater understanding of the culture than someone who took a year of Spanish in high school.
I wouldn't be discriminating against you, but rather choosing a more qualified individual for the position.
Btw, that would apply to a Hispanic who doesn't speak Spanish as their native tongue as well. You DO realize many Hispanics in the US don't speak Spanish?