If you look at the voting record of the hispanic population in the United States, you can see that they overwhelmingly vote socialist. This explains:
Why Latin America is falling apart
Why the Left is so desperate to bring as many of them into the USA as possible
Why conservative Americans don't want them to come here
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Foolish people who are otherwise conservative will say, "But what about the Italian and Irish and German immigrants of earlier times?" The answer is that they were not socialists. They came here to work and build up this nation.
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This is why conservatives here don't want immigration. Indeed, it is not just Hispanics that vote for socialism, it is all non-white people. Take a look at the chart of the 2016 election:
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Cubans vote Republican in the same percentage as the chart shows, Whites. Cubans know first hand what communism is, white Americans only know it by the news. If there was an anti-communist party, the Cuban vote would be close to 100%. The Cuban immigrants that came in the 1960's, became the fastest immigrant group in the history of the US to reach middle class status, contributing billions of dollars in taxes. Immigration is good, as long as the country picks and chooses who they allow in.
Unfortunately, among those classified as Hispanics by the census takers, Cubans represent practically nothing.
Here is the breakdown of of "Hispanics" by country of origin:
https://www.statista.com/statistics/234852/us-hispanic-population/ (if someone would post the chart here I'd appreciate it, I do not know how to do it.) Reading from the chart and doing some math 37 million Hispanics are Mexican, and 21 million from all other countries put together and practically all of them (except for the refugees from communist revolutions; Cubans, Nicaraguans, and recently the Venezuelans) all of them are economic immigrants, those that could not make it in their countries.
If the USA immigration policies would once again pick and choose which immigrants can come here, according to its needs, the immigration would be advantages, as it always had been before.
I think the bigger issue in this country being taken over by communists through the pole booths is the education system and the media, and even the Catholic Church and other member churches of the World Council of Churches.