My guess is that if we try to cross the border illegally into Mexico we will be shot and beaten in the streets.
My second guess is that Canada which has like 18000 troops because it takes advantage of US military strength will suddenly impose a draft and place 300,000 troops on the border to prevent us from crossing.
I know that in Germany, if people find out you are illegal in their country they will beat you in the streets. There have been riots in Germany over Turkish VISAS.
Basically we will have to wait for 20 000 000 Chinese troops to disembark and shoot everyone dead.