Jessica Stern named to position in June 2021
Country's president said measure violated international treaties
Measure also defines family as a man and woman with children
Agency adopted LGBTQ-inclusive non-discrimination policy in 2018
Aldo Dávila a vocal critic of country's government
Ryan Fecteau and Aldo Dávila praised for leadership
Protest took place outside agency's D.C. headquarters on Wednesday
Aldo Dávila a vocal critic of country's president, corruption
Effort part of strategy to address migration 'root causes'
Andrea González murdered days after vice president visited country
