Well, to be serious for just a moment, and not one freaking second longer, the travel ban can cut both ways. Ebola is going to come into the US, with or without the ban. Perhaps less so with the ban, but then again, ultimately the only way to gain control over the disease is with better treatment and less infection in W. Africa. It's not an airborne disease, and the answer to contain it in a hospital setting. I suspect ultimately we'll have a travel ban, even though a travel ban will not totally keep people from coming here having been in W. Africa, but along with the ban we'll have more aid going to W.Africa for treatment.
As for O'Reilly, he's titillated with the Africa/African connection.