Not only that, but many have been here for generations. They don’t want open borders any more than other Americans. They don’t like being lumped in with border jumpers and pandering to illegals only alienates them. They do want good jobs.
While the impact of open borders can easily be seen on urban blacks (who aren’t even offered crappy jobs anymore), legal Hispanics have a lot to lose as well - their competition for their jobs is being trafficked here and being pitched to them as a good thing.
They seem to learn quickly, and have been a lot less reliable for Dem politicians than blacks.