The Obama administration says there is little doubt that President Bashar Assad's regime is to blame for last week's reported attack, while some analysts explore the feasibility of alternative scenarios.
The super-heavy element with atomic number 115 has not yet been named. Scientists in Sweden say they have confirmed earlier data from Russian scientists.
Three years ago, USA Swimming was rocked by revelations of sexual abuse by coaches. Critics say it's still not doing enough to help victims of abuse. A recent move by the organization is seen as a response to criticism of its approach.