MAGA crowds don't hate immigrants just illegals, two different groups that the Left/Dem can't tell the difference like women and transwomen. And there are lots of Left/Dem blacks/minorities that are feeling the same about illegals too. Just take a look at Chicago, NYC, etc etc
All you have to do is punished these slave driving businesses that want cheap labors... get them to pay up for regular workers. Why would a person work in these meat processing plants for the same wage as a burger flipper and in a better working condition?
We have a pork processing plant in town and a beef procession plant within 15 miles from here. I know that majority of the workers in these plants are Latinos and refugees from Myanmar and don't speak much English. The working condition isn't good - cold, physically demanding, long hours and not much time off... some of them work 7 days a week all year round. All for the same pay as a burger flipper... but with health benefits.