Follow the link provided by the GP. It focused on construction jobs.
Regarding farm hands -- again, same idea. Ever hear of Cesar Chavez? He felt the same way about mass importation of unskilled labor for the migrant farmers.
Blaming the GOP is idiotic. It could have been stopped by any administration. Carter, Reagan, Bush, Clinton, Bush, Obama (Hell, he had s supermajority in both houses!). As much as I don't like Trump, he slowed it down. He was also the only candidate back in 2016 who actually TALKED about it which likely got him elected. If he could do that, imagine what Obama could have done with his supermajority. And Biden? Undid everything Trump put in place and made it easier to walk across the border. All while telling us how "secure" it was. Then when NOBODY (not even that sides base) believed it they flipped the narrative to admitting it, but together a weak bill and then blamed the GOP for not accepting it. Awesome.
For the record, I'm a 'Never Trumper' and not a Republican. I think Trump is a psychopath with poor impulse control. I also don't think every single policy out of his administration was poison.