According to the U.S. Anti-Doping Agency, “For something to be added to the … Prohibited List, it must meet two of the three inclusion criteria: a) it poses a health risk to athletes b) it has the potential to enhance performance and c) it violates the spirit of sport.” Though WADA has increased the threshold for a positive test, it has not taken marijuana off the list because it still asserts that the drug meets at least two of the above criteria. Also according to USADA: The 2021 World Anti-Doping Code newly classifies THC as a “Substance of Abuse” because it is frequently used in society outside the context of sport.
