Hes not stupid. He arranged the flight knowing he was likely exposed, already had a visa lined up and knew we cured ebola patients.
I guess the joke was on him. He showed up at a US hospital ER with the right symptoms and even told them he had just come from Liberia. They sent him home with a script. Let that be a lesson to any other Liberians trying to pull the same stunt!
Admitting desk: "just fill out these forms, and hand them back with my pen. Oh, sweaty palms!"
And who knows how many others had close contact with him before being turned away. Assuming he had no vehicle of his own, was it by taxi, bus or acquaintance driving him? How many restaurants and stores did he visit during those two days before going back to the hospital on the 28th? Not hearing anything about details.