You get disease and death. That is what we are seeing in California right now (and throughout the country). The resurgence of disease like measles, mumps and hep. A has nothing to do with vaccinations, it has everything to do with foreign invaders.
The same thing happened when the colonists came to this country a few hundred years ago. It happened and still happens, when "explorers meet new tribes in the jungles. The foreigners bring diseases that they have otherwise become relatively immune to.

Typhus, let me say that again for those that don't fully understand - TYPHUS. A mid-evil disease. A disease that we have not seen for so long that they don't even use it in movies because it wouldn't be realistic.

We all need to be careful. This planet has not seen a plague for far to long and when typhus comes rolling around it won't be long before the plague makes a comeback.

Illegals have brought hep. A to the entire country and now measles, mumps and typhus.

The black death WILL follow. Typhus spreads from rodents to people. Guess how the plague spreads.

If we as a nation will not address this invasion the way it needs to be addressed then we are doomed. The military should be placed at the border. This situation should be treated as a war not an inconvenience.