Doesn’t even need to happen to the U.S.
With open borders, all it takes is an outbreak in Central America. Comes up through Mexico.
Would Obama protect and defend our borders? Nope. Future Democrat voters by the hundreds of thousands, many infected, coming across.
Top down, bottom up, collapse the system.
I think Ebola, if run rampant, will hit the DemonRat herd faster than they can make new ones.