Ceremony takes places day after president announces transgender military ban
White House unsure when new policy details would be forthcoming
Anti-LGBT leader says follow-up to executive order coming next week
'Title VII’s prohibition of sex discrimination does not encompass sexual orientation discrimination'
Sanders threatens to shut down briefing over repeated inquiries on new ban
Senate Armed Services Committee chair pledges oversight over change
President cites dubious claims of medical costs and unit disruption
Bill advances despite opposition from business, law enforcement communities
'Gratuitous, extraordinary attack on LGBT people’s civil rights'
But future unclear as some Republicans express doubts