At the same time, blaming immigrants for issues garners support to gain office, being seen to do something about immigrants maintains that support so you can stay in office. In office, you can make sweeping changes accross the country that take from lower classes and bolster the rich and their industries.

In case its not clear this is exactly what Trump has done. They've managed to rile up stupid lower class americans (it isnt hard in todays deepfake, AI, social media addicted society) by fomenting hate and racism, gaining a nearly impenetrable base of voters to gain power and use it tp further fuck the planet, the majority, and those very same voters

Finally, depleting the labour force and causing strife for lower class Americans can easily be framed as the fault of immigrants or Joe Bidens weak economy inherited by Trump, the issues they are being very visible about "fixing"