Lets see,
Guns wants to secure the borders, and enforce existing laws to not let people just walk across the border, and flights curtailed from Africa.
I would take that a step further and say African flights are completely curtailed, and heavily screen any and all flights from all tropical locals.
You are seem to think this means we want to stop anyone and everyone from coming into the country which we all know is impossible, yet you ask if we should curtail Western Europe, and completely close our boarders. So I think it's a matter of what you are reading into what we are saying. Now you are level headed, and a college educated person. I would think you would be able read and interpret what we are saying as not closing our boarders, but securing and ensuring traffic coming into the United States is monitored, and does not contain a virus with a 70% lethality rate.
Now a college educated person would then ask the question of how would all of this security effect the economy, and would if be cost effective to secure this? Well since most goods are not shipped via aircraft, the effect would be minimal. The biggest effect would be monitoring Singapore and traffic there to ensure that spread is minimized. If this thing shows up there, we got big problems.
There is a lot to discuss here with this topic, and the points that Guns is making are extremely valuable to the discussion. I get that you don't think ISIS is a threat, I think you are wrong, but I understand you point of view. FYI you don't smuggle this into the country in containers, you smuggle this into the US in a person just like the guy that showed up in Dallas.