[Someone1234]

It will work in the same way the TSA works: It will make people FEEL like the government is taking action. Which is really what it aims to do and nothing more...

Aside from that it will likely pick up more false positives than it will actual Ebola cases (e.g. common flu, someone getting too hot after running from the aircraft with a heavy bag to beat the queues, etc), Ebola can go asymptomatic for over a week within which time it will be undetectable.

Keep in mind that several African states are already checking people as they leave. So for this US measure to work someone would have to go from asymptomatic to symptomatic within the time it takes from flying out of an Ebola infected area and arriving at their destination (e.g. 12 hr period).

I already feel bad for all of the people who will be incorrectly quarantined under this scheme just because they have regular flue. They will be caught up in a state overreaction similar to "shoe inspections" and "no liquids above 150mm" nonsense of the past ten years.