We keep doing this over and over and over again. Remember when the Haitians were invading South Florida, and when they were not washing up on shore, they were dying of all kinds of infectious diseases.
Keep in mind that the primary reason Ellis Island existed was to identify, isolate, and quarantine immigrants who were fleeing disease ridden Europe. Smallpox, TB, plague, you name it, along with every human parasite ever known were at least slowed down by the health inspectors at Ellis Island.
And with the Obama Regime playing the heavy bully to keep as much of this secret and out of the public eye, there is no frickin' telling what these invaders are introducing into our country.