Best in the world surely, still think in 10-15 years they'll be up there, if they have a clear plan in place.
Sorry, but I have being hearing that since the 70's when legends like Pele, Best, Cruyff etc went there, then it really ramped up after the 94 WC and here we are still asking the same question all these years later.
I see the OP uses also the population angle, nah not for me, reason being Irish. Our Rugby team were ranked 2nd last year (USA 15th), yes second for a sport which is jointed fifth choice among those who like sports and I am pretty sure among our population of 6 million men women, oap's and children, that many don't like any sport at all never mind Rugby, same as Golf, we produced a masters champion, France and their massive population haven't.
Women soccer in the Usa for some reason has always being more popular and played and watched then the men's game, watch the original 1984 Karate kid for proof.