White House press secretary Jen Psaki has called on sporting bodies and anti-doping authorities to reconsider the rules around cannabis use after US sprinter Sha’Carri Richardson was banned from representing her country in the Tokyo Olympics.

The 21-year-old athlete was a gold medal favourite in the 100 metres, but accepted a one-month suspension from competing after testing positive for cannabis use.

Sha’Carri Richardson: tipped to win gold in Tokyo

The ban has drawn widespread criticism, with many insisting cannabis is not a performance-enhancing drug and that the policy disproportionately impacts black athletes.

Psaki told CNN: “We certainly have to respect the role of the US Anti-Doping Agency and the US Olympic Committee and the decisions they make.

“We know the rules are where they are. Maybe we should take another look at them.”

Meanwhile, the Nevada State Athletic Commission (NSAC) has unanimously voted against disciplining boxers and UFC/MMA fighters who test positive for cannabis.

NSAC chairman Stephen J. Cloobeck said: “We should always be at the forefront of these issues. I believe it’s warranted and merited since it is legal in this state.”