NSO Labor Day performance held at U.S. Capitol
Nielson also represented National Rifle Association
2020 hopeful said to bring in $75,000 at event
The band split in 2013
Gay troops expelled under 'Don't Ask' also covered
The athlete revealed she is in a relationship with another woman
The series will continue through 2022
Proposal undermines Obama-era policy issued by Julian Castro
Film chronicles purge of gay federal workers
Thousands participate in annual D.C. commemoration
Annual Memorial Day weekend event jam packed with seminars, parties, entertainers and more