The Federal Government has been completely unwilling, and unable, to enforce the current immigration laws and border security for the last 20 years.
Why does anyone think that anythng is different now?
BTW, look at this from the Mexican point of view. This is a MASSIVE victory for the Mexican government. They are now able to offload another 10,000,000+ of their poor into the US now. That is 10,000,000 they won’t have to worry about.
You know, now I'm really considering enhancing my Spanish-speaking skills - and moving to Mexico. Ought to be a nice country once all their liberal freeloaders have moved up here!