Democratic lawmakers wrote Secretary of State Antony Blinken on April 18
U.S. among 39 member countries
Officials from across region attended launch in Mexico City
Country's Human Rights Commission has threatened legal action against Steve Hofmeyr
Police have charged one man in connection with the killings
Man approached Olena Shevchenko in Lviv on Thursday
African country decriminalized homosexuality in 2021
Scott Morrison noted position ahead of May 21 general election
Anti-LGBTQ persecution, violence remains commonplace around the world
Nick Herbert acknowledges episode damaged UK 'global reputation'