▁ ▁Similarly , ▁Congress ▁may ▁pres cribe ▁such ▁goals ▁and ▁rule making ▁duties ▁to ▁a ▁pre - ex isting ▁ag ency . ▁ ▁Adv ance ▁Notice ▁of ▁Pro posed ▁Rule making . ▁ ▁This ▁optional ▁step ▁ent ails ▁publishing ▁the ▁ag ency ' s ▁initial ▁analysis ▁of ▁the ▁subject ▁matter , ▁often ▁asking ▁for ▁early ▁public ▁input ▁on ▁key ▁issues . ▁ ▁Any ▁data ▁or ▁communic ations ▁regarding ▁the ▁up coming ▁rule ▁would ▁be ▁made ▁available ▁to ▁the ▁public ▁for ▁review . ▁ ▁Occ asion ally , ▁a ▁board ▁of ▁potentially ▁affected ▁parties ▁is ▁compr ised ▁to ▁do ▁give - and - take ▁b arg aining ▁over ▁rule making ▁subject - m atter ▁which ▁would ▁otherwise ▁result ▁in ▁dead locked ▁opposition ▁by ▁an ▁interested ▁party . ▁This ▁is ▁commonly ▁called ▁" neg oti ated ▁rule making ", ▁and ▁results ▁in ▁more ▁custom - tail ored ▁proposed ▁rule . ▁ ▁Pro posed ▁Rule . ▁ ▁In ▁this ▁step , ▁the ▁ag ency ▁publish es ▁the ▁actual ▁proposed ▁regul atory ▁language ▁in ▁the ▁Federal ▁Register ; ▁in ▁which ▁a ▁discussion ▁of ▁the ▁just ification ▁and ▁analysis ▁behind ▁the ▁rule ▁is ▁printed , ▁as ▁well ▁as ▁the ▁ag ency ' s ▁response ▁to ▁any ▁public ▁comment ▁on ▁the ▁advance ▁notice . ▁ ▁Public ▁comment . ▁ ▁Once ▁a ▁proposed ▁rule ▁is ▁published ▁in ▁the ▁Federal ▁Register , ▁a ▁public ▁comment ▁period ▁begins , ▁allowing ▁the ▁public ▁to ▁submit ▁written ▁comments ▁to ▁the ▁ag ency . ▁Most ▁ag encies ▁are ▁required ▁to ▁respond ▁to ▁every ▁issue ▁raised