Except most Latinos are either lukewarm, I-can-fornicate-and-get-drunk-all-I-want Conciliarists or "evangelical" Protestants. An ever-increasing number are even converting to Islam these days. This started after the 9-11 attacks, when many Latinos, brainwashed by the idiot left into believing that the evil gringos are the source of all their troubles, began to admire and adulate the Arabs. Arab-sounding music, bellydancing, and Arabic-themed soap operas are all the rage now. Mosques are opening up all over Latin America. In the USA, just like the Anglo population, few Latinos have more than a sentimental attachment to "Mother Church."
No, the Hispanics can breed all they want (and even their birthrate goes down substantially after a generation or two in the US) but if they are all evangelicals or Muslims, what good will it do the Church?