It's not "what's happening" but "what has been happening for millennia" (or centuries if you only consider America).
I don't see why everybody takes this so to heart.
It is an American problem (if it is even a problem to begin with) and nothing important for others to care about IMHO, it's not like they will go circumcising -your- children, I mean they won't even make you circumcise your children if you happen to be American.
Also, don't worry, Americans won't become extinct (at least not due to male circumcision), the birth rate is big enough and the couple in a million of badly cut to the point of uselessness penises won't make the country disappear.