Jill Biden spoke in Arlington, Va., on Friday
Several events planned in coming weeks
Jill Biden delivered event's keynote speech
'Nonbinary and transgender people are some of the bravest Americans I know'
White House ceremony took place Monday
Stigma, criminalization laws among barriers to fighting pandemic in region
First lady spoke at annual gathering in Arlington, Va.
LGBTQ rights organization holds gala event and awards ceremony
Congressional Republicans are trying to roll back progress, the president said.
First lady will also deliver remarks