A friend of the Khashoggi family told The Associated Press that Salah, one of Khashoggi's sons, has been under a travel ban since last year.
Yasuda was released and transferred to an immigration facility in Turkey, a Japanese government spokesman said.
"I am no longer able to participate in public life," O'Connor wrote in a letter addressed to "friends and fellow Americans."
Under a proposal first reported by the New York Times, the Trump administration would define gender as male or female based on genitalia at birth.
The 88-year-old business investor and Holocaust survivor has been a frequent target for his left-leaning political involvement.