Immigration, and particularly the visa program, is a factor of imperialist underdevelopment and dependency. The US vacuums up labor and then those workers send back remittances to their families, but because labor is the superior of capital it never makes up for the loss of labor power. Nevermind the fact that those workers often have their wages stolen and are subject to extremely dangerous working conditions.

Trump's coalition seems to have plans to blow this whole relationship up through a denaturalization scheme. Instead of superexploitation of migrant workers, they want to turn people born in the US into noncitizens and use them instead.

Nightmarish, but it's hard to see Mexico not pivoting towards the BRICS after that.