They are going to add the states to Mexico. What in the hell makes you want to add a bunch of welfare candidates to the US budget?
Why do you assume they will be on welfare? They are coming to the US whether you like it or not. If you are forced into a fight, choose to fight on your own terms.
1) Gradual merger of Canada, US, and Mexico under NAFTA. Goodbye US sovereignty.
2) End NAFTA and seal the borders. Good bye US economy as we try to pay for it.
3) Continue with the status quo. Mexicans will continue to illegally cross into the US and settle and multiply.
4) Merge Mexico into the US so that they will have little reason to move. The US will go to them. US business will build there instead of China, Malaysia, Indonesia and the rest of the third world. End social security, welfare, minimum wage and all the other socialist BS that has infested the federal government.