I didn't know about that, but from what I have found, Wade Exum, the former anti-doping chief in the USOC, said that from 1988-2000, the US authorities, primarily the USOC and USATF dismissed/hid/threw away/swept under the rug/whatever you can conjure up, hundreds of positive drug tests, and, according to Exum, at least half of those positives went on to win medals at World's and Olympics during this time period. Now, USATF has a long history of good results. It's not like they popped out of nowhere during the said period, but this guy (just like Rodchekov, his Russian counterpart) has seen lots of things. Carl Lewis failed several doping tests during the sprint/summer months of 1988, including that year's US Olympic Trials, and was cleared to compete. I think we all know what transpired in Seoul. Ben Johnson failed a test and boom, he was DQ'd immediately and like a true political farce, the gold medal went to the Lewis. Essentially, Johnson was made a scapegoat. After all these years Lewis hasn't acknowledged that he failed doping tests. The closes thing he's ever done to doing that, was in 2003 he said 'so what if I failed tests?' Why is Johnson DQ'd for failing drug tests, and Lewis isn't? Why was Lewis allowed to compete in Seoul (and beyond) in the first place? Johnson acknowledged that he took steroids, but actually he wasn't busted for what he was taking to prepare for those 100 meter races that summer.
Why shouldn't we take Exum's words like we are taking Rodchenkov's words? I can't imagine their work being too dissimilar, unless all we want to focus on is 'but us doping isn't state sponsored, and isn't policed by the special forces...' One would think that hiding hundreds of positive tests from top athletes, medal winning athletes, money making athletes is at least somewhat systematic, isn't it?