A big share of Hispanics are white. They identify as whites and look just like the rest of the white population. So whites will likely be a majority for a long time and probably in perpetuity.
Further many brown Hispanics also are pro-American and conservative. For example, Miami is a Republican run city that is clean and safe has very little crime.
The folks in Texas of Hispanic origin, who have been here for generations, are some of the most Conservative people in the country.