The US is already working on this, albeit unintentionally.
Undocumented immigrants were at 3.3% of the population in 2016 and the numbers have absolutely exploded since the beginning of the Biden administration, with 2 million apprehensions so far for in 2022 [0]. The cumulative effect of this over just a single term of the Biden administration will completely reshape the demographics of most of the border states (and most major cities of the country), as the majority of immigrants are arriving with very little means, extremely limited ability to speak English, and will be mostly restricted from accessing the US financial system without legal residence status, hobbling them financially and forcing them into informal work arrangements.
[0] https://www.wsj.com/articles/illegal-immigration-arrests-hit...