I'm saying that historically it's not an American trait, regardless of ethnicity but including Hispanic/Latinos, whereas it is in Latin American countries. Now, whether that is changing now due to a generation or two of Mexican/Latin country-born migrants who have brought that part of their culture here, that remains to be seen. Have you looked at historical Census data? How about historical influential Hispanics in the US? Cesar Chavez....Corky Gonzales here in Denver. How about politicians? Actors, comedians? Time Magazine's 25 Most Influential Hispanics...hmmmm....seems to be something similar with just about all of them. 

NPR just had an interesting show about this very topic...I'm sure you can find it (among many others regarding this topic). Your reality, if true, is an anomaly historically in the US.