Speaking of warehouse work, I was a warehouse worker once over a decade ago and it was fuckin brutal lol.
The amount of physical work was just insane and the pay was super shitty. The walking, the lifting, menial tasks, etc... (for 8+ hours) I thought to myself how it would be far better for me to just stay home, play games all day, and scour the internet to read and learn about different subjects. (and that was exactly what I did).
If anyone truly wonder why Americans tolerate illegals I would say thats one of the major reasons.
Some jobs are just fuckin brutal yet illegal third worlders will do them with shit pay. They work fast and they work hard. I was a lazy post college kid looking for immediate work before I could land something else.
You do NOT work at a warehouse because you want to. You work there because you have bills to pay.
Ask yourself who you would rather hire as a business owner: ie, young and entitled educated Americans who want better pay or illegals who work harder and faster and are content with shit pay.
There are 5'1 illegal mexican goblins and south americans all over CA doing those tough jobs.