Some years ago I was the Sgt & Firearms Instructor for a small (50 man) Sheriff's Department. I ordered and used WW USA 'White Box' by the case, burned it as fast as we got it and kept ordering more because it was the cheapest, good quality ammo we could get. I have personally used that ammo in 40 S&W, 45 Auto and 357 Mag and have never, in altogether probably 30,000 rounds, had a round fail. Their USA .45 ACP 230 JHP is good enough that I carried it for years and I would not hesitate to do so again.
While I have not used a lot of the 9mm in question, one of my sons has used probably 2000 rounds of it with no issues. Many of the cadets at his Academy used it as well. However this is not the first complaint I have seen regarding 9mm USA ammo and I do not doubt that there have been problems. I have to wonder if some bad batches got out.