Banka said he was “very keen” to work alongside the United States Anti-Doping Agency (Usada) but “it has to be based on mutual respect”, with tensions between the two organisations being high in recent times.
Earlier this year, Usada said it “fully supported” the US government’s decision to withhold a payment of $3.6m (£2.8m) to the World Anti-Doping Agency (Wada).
That came during a dispute over the handling of a doping scandal involving Chinese swimmers who were cleared to compete at the Tokyo Olympics in 2021, despite testing positive for a banned substance months earlier.
An independent investigation found Wada did not mishandle the case or show bias towards the 23 swimmers.
On Thursday, Banka added: “We really want our colleagues from the US to do more to make sure that this event will not happen.
“There are some legal possibilities they can lobby for. Usada has made general comments, but maybe it’s time to try to convince the people who have financed this that it’s dangerous.
“That’s [Usada’s] role and responsibility because the event is going to take place in Las Vegas.”
