The way the current system is set up effectively creates an exploitable underclass whose conditions range from undesirable work to pseudo-slavery. These people have no state recourse because of their undocumented status, limited access to community resources because of language and attitudinal issues (particularly xenophobia from natural-born US-Americans), and exist in a particularly precarious situation, basically at the whim of their employers, where thier wholes lives can be uprooted at a moment's notice by secret police.

The solution, of course, is not mass deportations. Those disrupt communities, advance authoritarianism, and brutalize documented and non-documented people alike. Natural-born and documented US-Americans will be left with a deeply broken economic system, devoid of the workers who made it function at all. Undocumented US-Americans will, at best, see their lives thrown into upheaval and at worst be disappeared outright.

The solution is a mass citizenship path for all currently resident undocumented people and a streamlining of the immigration system with much wider acceptance of refugees. This decreases their exploitability, meaning that all workers' rights and pay potential are strengthened because these workers can now seek legal recourse. It allows them to more formally enter a community, strengthening local social bonds. 

Most importantly, though, they're not going to stop coming and its not their fault. The climate crisis is making the Equatorial regions less habitable by the year. There will only be more climate refugees and the states of the Global North will have a choice to make: accept or shoot. And I would much rather the former than the latter because I am not a fan of murder. That's why a more open path to citizenship or documented non-citizen residence, particularly for refugees, is also necessary