HopeN'Change
... "Off the top of our heads, we're thinking your garden variety death-to-America type terrorists. Because getting the highly-contagious virus into the United States could do inconceivable damage.
"But how to do it? Even an airport TSA officer is going to be made suspicious by a fuzz-filled petri dish in someone's shoe, or an alleged bottle of V-8 that is coagulating into layers of blood plasma.
"Which is why the best way to smuggle in the virus is to smuggle in someone who's infected. Sure, it could be your standard suicide vest-wearing nitwit who's anxious to start boinking virgins in the hereafter...but how much better would it be if the viral timebomb was inside a child who might not even know he or she was infected? A child whose unrestricted movement into and around our country was actually facilitated by our government?
"Consider this scenario: terrorists obtain vials of infected blood in Liberia (not hard since everything there is spinning off the rails). Transport those vials into Central America, pay off a few "coyotes," and start giving "free vitamin shots" to unsuspecting kids heading for the American border. Then just sit back and enjoy the apocalypse!" ...