Ebola is bad, but is it worth more than 6 billion US dollars?

Something that is really interesting to me about Africa is the big Ebola problem. This is a very bad thing that has been going around Africa. President Obama has given a generous amount of donated money to them, $6.18 billion to be exact, due to concerning financial and construction issues. I think that it was very nice for Obama to do that but it wasn't necessarily called for. I mean, the United States has its own problems and we could have used $6.18 billion too! All of the homeless, sick, and poor people is the US should deserve some money too.