I found this article very interesting about how immigration has been limited already through Mexican & USA collaboration. It seems that continuing that collaboration & expanding it would continue to be helpful. And add in a resubmitted Border Bill of 2024 too, see: https://www.forbes.com/sites/alisondurkee/2024/09/10/harris-slams-trump-for-killing-border-bill-in-debate-here-are-the-facts/