So, is the epidemic over in the U.S.? The definition of epidemic being an increase in expected infections for a community or region would indicate that it is over.
I think this issue is a matter of semantics. According to the usually accepted scientific definition of "epidemic" which you stated, the US epidemic was over when TB cases peaked in 1992. There is currently no epidemic of TB in the US.
A casual or lay use of the term "epidemic" might include "a lot of cases of something" which sounds like basically the way you're using it, although I think that's a very confusing way to use it. Yes, there are still a not-insignificant number of Americans developing TB every year, but it's fewer Americans than ever. We still have a long way to go to reach the stated goal of one case per million population. We'd have to get down to three hundred cases a year to realize that dream. However, just because TB exists in the numbers we see today or because there is a campaign to eliminate it does not mean that there is an epidemic of TB in this country.
So I would agree that TB is still a problem in this country, but I would disagree that there is a TB epidemic.
However, you just mentioned "worldwide" in the latest response. The article you linked to and our discussion so far has been about TB in the US. The global situation, in the Third World in particular, is very different from the US situation. If you want to talk about the global TB situation, then I would agree that there is a global epidemic of TB.