This isn't a knock on Kaine, and by accounts he actually does actually speak decent Spanish unlike most of the politicians our press rapturously hails as being bilingual (I know some Spanish. Mostly nouns. I don't come close to "speaking Spanish."). Still it's ridiculous when having a facility with a second language is seen as some sort of superpower, especially one which is so amazing that bilingual immigrants and their children and grandchildren (some of whom might also be bilingual) will be really really impressed. Lots of people in the world speak multiple languages, including most of the people this stuff is supposed to impress.
Not wanting to deport their families. That might be a bit impressive.