▁in ▁the ▁comments . ▁ ▁Depending ▁on ▁the ▁complexity ▁of ▁the ▁rule , ▁comment ▁periods ▁may ▁last ▁for ▁ 3 0 ▁to ▁even ▁ 1 8 0 ▁days . ▁ ▁Final ▁Rule . ▁Usually , ▁the ▁proposed ▁rule ▁becomes ▁the ▁final ▁rule ▁with ▁some ▁minor ▁modifications . ▁ ▁In ▁this ▁step , ▁the ▁ag ency ▁publish es ▁a ▁full ▁response ▁to ▁issues ▁raised ▁by ▁public ▁comments ▁and ▁an ▁updated ▁analysis ▁and ▁just ification ▁for ▁the ▁rule , ▁including ▁an ▁analysis ▁of ▁any ▁new ▁data ▁submitted ▁by ▁the ▁public . ▁ ▁In ▁some ▁cases , ▁the ▁ag ency ▁may ▁publish ▁a ▁second ▁draft ▁proposed ▁rule , ▁especially ▁if ▁the ▁new ▁draft ▁is ▁so ▁different ▁from ▁the ▁proposed ▁rule ▁that ▁it ▁ra ises ▁new ▁issues ▁that ▁have ▁not ▁been ▁submitted ▁to ▁public ▁comment . ▁ ▁This ▁again ▁appears ▁in ▁the ▁Federal ▁Register , ▁and ▁if ▁no ▁further ▁steps ▁are ▁taken ▁by ▁the ▁public ▁or ▁interested ▁parties , ▁it ▁is ▁cod ified ▁into ▁the ▁Code ▁of ▁Federal ▁Reg ulations . ▁ ▁Jud icial ▁review . ▁ ▁In ▁some ▁cases , ▁members ▁of ▁the ▁public ▁or ▁reg ulated ▁parties ▁file ▁a ▁law suit ▁alleg ing ▁that ▁the ▁rule making ▁is ▁impro per . ▁ ▁While ▁courts ▁generally ▁offer ▁significant ▁de ference ▁to ▁the ▁ag ency ' s ▁technical ▁expert ise , ▁they ▁do ▁review ▁closely ▁whether ▁the ▁reg ulation ▁exceed s ▁the ▁rule making ▁authority ▁granted ▁by ▁the ▁author izing ▁legisl ation ▁and ▁whether ▁the ▁ag ency ▁properly ▁followed ▁the ▁process ▁for ▁public ▁notice ▁and ▁comment .