Tell me what is the Mexican language? And tell me what is the Asian language?
Interesting point re Mexican.
There is Spanish Spanish, as in the generic media Spanish usually heard on Univision.
Then there is Mexican dialect, with a unique series of accents, and peculiarities of vocabulary and pronunciation.
The politically significant language here really is Mexican, in its major varieties.
No major politician from any party does Mexican. The best probably is Jeb Bush, of all people, because he learned from his wife who is the genuine article. Jeb does do Mexican folksy a bit. Rubio is Univision-Cuban.