They aren't supposed to be here, and they're not supposed to be able to work under minimum wage. It is a large part of the reason Black people are out of the Blue Collar middle class. You can justify it however you want, it needs to stop. If they weren't there, the wages would go back up, and Blacks would go back to them.
I want to be nice today, so...
The belief that removing immigrants would restore wages for Black workers and reinstate the Blue Collar middle class oversimplifies things.
Your post also overlooks the conditions that contributed to the decline in the first place. Wage stagnation is primarily influenced by larger factors such as automation, globalization, greed, and systemic racial issues, rather than just the presence of immigrants.
The real solution lies in addressing those systemic inequalities, the rampant corporatism, unregulated capitalism, and corporate greed that's smothering us all, rather than just focusing on immigration. One of the most effective ways to improving things is through unionization. Something the people you support spend billions trying to dismantle. What's sad is the people who put the batter in your back promote this narrow view to obscure those real issues, because they benefit from exploiting the situation for their own personal gain, and you happily go along with them w/o question.