You have already seen genetically engineered pro athletes. https://www.smh.com.au/news/basketball/yao-ming-the-basketba...
> The two were encouraged to marry in a system with undertones of eugenics, the controversial gene-pool manipulation espoused by the Nazis and previously trumpeted by Beijing.
> It wasn't a national breeding program, it was a desire among Shanghai officials for them to get together," Larmer said. "But when Yao was born, everybody in the sports community in Shanghai and nationally knew he was something special."
While I agree that's unsavory, that's not what most would consider "genetically engineered."
Strangely, no mention of US' being really into it before WWII