I’d like to repost my own comments from here

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That smear campaign makes me so annoyed because the US tests less and is still more likely to be caught doping
That’s not getting into how US athletes use medicine as a form of legalized cheating.
Asthma medicine is a big favourite, which significantly improves performance (you might be thinking “of course it does, it’s asthma medicine!” But it does it to an outsized extent and it is pretty suspicious that a larger amount of US elite athletes have asthma as compared to the rest of the population).

Is this veering into a place that could get ableist? Yeah, kinda, but I trust we’re all smart enough not to draw the conclusion that “people with medical conditions shouldn’t be allowed to practice professional sports.”
What we should be concluding is that there is a large grey zone for what constitutes “doping” a grey zone which has been created on purpose in order to make it possible for the US to give itself an advantage whilst still being able to slander others. You need an exception for “legal” drugs, and 63% of those exceptions were given to the US, Australia and France
Neat! I wonder why

But Egon, I hear you say, the US doesn’t hold any influence over WADA just because it supplies 15% of their funding! And even if it did, it wouldn’t use it! You imperialist dog! Of course they would use it, they do use it all the time!

It’s very telling that WADA does not have a readily available statistic over how many athletes have received these exceptions per country. WADA also doesn’t give a comparison of prize winners to exception holders (“of the 100 winners x% had one or more medical exceptions”). The rules also vary some places your national org grants the exception, some places it’s an international org. Most of the date is only available due to Russian hackers.

Three more sources for you