Ambassador Ted Osius calls the recent arrest and harassment of bloggers and rights activists ‘a disturbing trend.’
The students’ parents have kept them home from school in a bid to pressure authorities to abandon the project.
Nguyen Van Dai's arrest violates Vietnam's international commitments under human rights agreements, EU diplomats say.
Nguyen Van Dai had served four years in jail on the charges between 2007 and 2011.
He had served his full four-year sentence for ‘propaganda against the state.’
Authorities in Hanoi and Da Nang had refused requests to reconsider verdicts against the activist and his group.
Nguyen Van Dai and fellow activists were assaulted as they returned to the capital by taxi.
Hospitals can perform reassignment surgery, but the procedure is required for legal gender recognition.