Well it doesn’t matter much, but I always had the understanding that ethnicity pertained more to culture.
Having clarified that I agree that nationality is not a guarantee if fidelity but in the USA and Europe out of the 100% of Catholics the actual number of practicing Catholics is low. The contrast with the Latin american countries is that out of the total percentage of Catholics inside the country, a huge majority are practicing catholics. However is true, for some reason when many of them come to the US many of their children tend to abandon catholicism or become cafeteria Catholics. I think is part of the secular culture that is abundant in the US. I also think it has to do with the fact the US churches are way more permissible than the catholic churches in Latin America. Because the church is so permissible then is easier to become a cafeteria catholic while being submerged in the secular culture.
Not sure I agree with this, in fact I can think of an argument that might refute it. If Latinos are, by and large, more faithful in practicing their faith in their native land and their churches more obedient, would that not give them a more abundant spiritual life upon which to draw? We are all inundated with daily temptations; I refuse to watch sitcoms for example, because I know most often they will make a mockery out of my belief system. No matter where we turn, contraception, gay sex and immoral living await at every corner. Surely you cannot be saying that the grace God gives me to resist this is greater than the grace He gives to Latinos. Anyone who has lived a sacramental life and holds to truth is pretty much on an even par. Sin is sin and Satan has no boundaries as far as the color of skin - he accepts all gladly. I also disregard the argument that Latinos suffer more greatly from the secular culture - look what has happened to Ireland as just one example!