More than 60 lawmakers signed letter to Secretary of State Marco Rubio
Volker Türk on Monday spoke at UN LGBTI Core Group event
General Assembly taking place this week in New York
Country's president has yet to sign ally criminalization bill
Volker Türk and Winnie Byanyima issued statement before global AIDS conference
Jessica Stern, Victor Madrigal-Borloz among speakers
Measure would 'criminalize' LGBTQ, intersex people
