San Diego is quarantining all those that arrive from the southern border for ten days. To date, there seems to be no such effort by Texas. New Mexico, Arizona also need to increase their vigilance of border crossings. These are people in need after hurricanes that devastated their countries.
There must be partnerships put in place to prevent mass migration. A while ago there was a program within the UN called the Millennium Project. It ran until 2015. I think that needs to be revisited to find ways to protect land so people have homes.