The US is among statement signatories
Dana Zzyym filed federal lawsuit after 'X' gender marker request denied
Government amended regulation after lobbying from activists
Law required surgeries to legally change gender
Doctors from across country now offer HRT, gender-neutral forms
Intersex activists also sharply criticized measure
Countries urged to adopt laws banning 'sex-normalizing' surgery
Dana Zzyym denied travel document with 'X' listed as sex
Sixty-three percent report negative consequences of ‘corrective’ surgeries
Andrés Manuel López Obrador took office on Dec. 1
