"Caster is not the only woman athlete with a masculine build and the International Association of Athletics Federation should know better, " an ANC statement read.
South African teenager Caster Semenya is favorite to win Wednesday's final as she qualified fastest, winning the first semifinal in a time of one minute 58.66 seconds.
"The African National Congress Youth League welcomes the decision of the IAAF to clear South African golden girl Caster Semenya to continue to be an athlete as a woman, " said Shivambu.
"Hopefully, this resolution will set a precedent so that no female athlete in the future will have to experience the long delays and public scrutiny which Caster has been forced to endure, " added Nott's fellow lawyer Jeffrey Kessler.