One reason is that America has outstanding healthcare and has invested a lot in our health benefits. American is a highly developed country and is alway ready for daunting and unwilling task. For example when the few ebola patients came back to America they were treated right away with extreme caution and even a few survived under Americas intense care. We Americans are very fond of our healthcare and we should have plenty of confidence in taking care of this Ebola issue. The real questions that should be at hand are, when will we find the vaccine or how could we annihilate this disease from this planet?
Another reason why america shouldn't be concerned is that Ebola is not as significant as the other disease that plagued american once before or that still is. There are many disease that are detrimental to one health that are way more infectious than Ebola such as Swine-flu, West Nile virus, HIV/AIDS, and Influenza. Did you know that the outbreak of Influenza killed about 100 million as of the Ebola virus outbreak killing around 800 so I would say Ebola is not as contagious as other diseases. Some might say that we should be fully concerned about Ebola but I strongly disagree with them under many circumstances.
So Instead of be so concerned with Ebola we should challenge our selfs to see how fast we could come up with a vaccine under our great healthcare but it shouldn't be top priority. There are many other disease and generally other problems that we face that we need to deal with first before they get out of hand.