I think the video said some 60% of workers willing to do the jobs you and fellow Americans don't want to do are undocumented workers.
I'd have to watch the video again, but you can check that 60% figure.
No guest worker program is going to fix that situation.
The video also mentioned that the money sent back to Mexico helps to keep Mexico safer. That's in the interest of your national security.
Cutting the flow of illegal American guns into Mexico would also help there. That's something i don't recall you ever posting about.
It was Plato who said, “He, O men, is the wisest, who like Socrates, knows that his wisdom is in truth worth nothing”