U.S. investigating Chinese swimmers’ doping tests

GENEVA — The international swimming federation says its top administrator has been ordered to testify as a witness in a U.S. criminal investigation into the case of 23 Chinese swimmers who failed doping tests in 2021 yet were allowed to continue competing.

The news comes just three weeks before the Paris Olympics, where 11 of the Chinese swimmers who tested positive for the banned heart medication three years ago are set to compete.

The swimmers won three gold medals for China at the 2021 Tokyo Olympics...