Again, what law is there that is applicable to federal agents and requires body cameras? Be specific. A federal judge doesn’t make laws. They interpret and apply existing laws.
Washington D.C. is an at-will employment state. If they feel violated because their job requires a bodycam, they can take their vast litany of talents to any private enterprise that's willing to pay for their retinue. Nobody should go to jail because they don't want to wear a bodycam, after all.