“Defenders of slavery argued that the sudden end to the slave economy would have had a profound and killing economic impact in the South where reliance on slave labor was the foundation of their economy. The cotton economy would collapse. The tobacco crop would dry in the fields. Rice would cease being profitable.” [1]
[1] https://www.ushistory.org/us/27f.asp?srsltid=AfmBOopur7dsLKE...
Does that mean you support laws to protect those workers from exploitation by enforcing workplace safety standards and giving them legal guest worker permits? Great, let's hold the exploiters accountable by protecting the exploited.
But the plan isn't that, nor is the plan to deport them. Rather it is to put them in a state of fear of deportation so they don't complain about the exploitation.
You don't actually think the exploiters want to pay Americans a living wage, leave crops to rot in the field, or slow down meat packing plants do you?