Tamara Argote will represent Bogotá
Country's president said measure violated international treaties
Country's marriage equality law took effect on March 10
Insight Chair Olena Shevchenko is now in Lviv
Angélica Lozano is married to Bogotá Mayor Claudia López
Plaintiff criticized government 'crusade against same-sex marriage'
Measure also defines family as a man and woman with children
Gabriel Boric's Cabinet has two out members
Two same-sex couples married in country's capital on Thursday
A gay man from Ukraine who lives in D.C. with his husband says his mother-in-law remains hunkered down in her apartment in Kyiv
