

Ebola is endemic in the region (I think bats carry it). As a result, there will be contagion sometimes, specially more so with climate change and destruction of habitats. Until a cure is developed, we need to treat the sick and try to prevent spread. There is no easy solution to this problem, or MERS, or Hantavirus, or…. Well, you get the point.






This is not for a visa. Green cards are permanent resident cards. You get those when you meet criteria to stay in the country indefinitely (say, they marriage). You always needed to leave the country to renew a temporary visa, but not to get a green card.