2 0 0 6 , ▁which ▁deleg ated ▁powers ▁to ▁the ▁jud ici ary ▁to ▁over see ▁human ▁rights ▁viol ations ▁within ▁Victoria . ▁Although ▁this ▁allows ▁the ▁jud ici ary ▁to ▁interven e ▁in ▁Parliament ' s ▁role ▁in ▁certain ▁circumstances , ▁subsequent ▁legal ▁anal ys es ▁have ▁determined ▁that ▁the ▁courts ▁only ▁have ▁such ▁power ▁as ▁they ▁have ▁been ▁granted ▁by ▁Parliament . ▁In ▁the ▁specific ▁case ▁of ▁the ▁char ter , ▁the ▁jud ici ary ▁may ▁indicate ▁if ▁legisl ation ▁contra ven es ▁the ▁char ter ▁but ▁not ▁invalid ate ▁the ▁law , ▁although ▁this ▁does ▁not ▁necessarily ▁mean ▁that ▁a ▁future ▁parliament ▁could ▁not ▁alter ▁the ▁char ter ▁to ▁give ▁the ▁jud ici ary ▁this ▁power . ▁Parliament ▁may ▁delegate ▁powers ▁to ▁another ▁branch , ▁but ▁as ▁it ▁may ▁reverse ▁such ▁powers ▁at ▁any ▁time ▁it ▁maintain s ▁so vere ig nt y ▁over ▁the ▁other ▁branches ▁of ▁government . ▁ ▁S over e ig nt y ▁is ▁further ▁rein for ced ▁by ▁the ▁fact ▁that ▁no ▁Parliament ▁may ▁pass ▁a ▁law ▁that ▁a ▁later ▁Parliament ▁cannot ▁over turn , ▁including ▁the ▁deleg ation ▁of ▁powers ▁to ▁other ▁branches . ▁All ▁controvers ial ▁social ▁issues ▁are , ▁in ▁practice ▁and ▁in ▁law , ▁still ▁determined ▁and ▁deb ated ▁by ▁Parliament . ▁ ▁The ▁ 2 0 0 3 ▁changes ▁to ▁the ▁Victor ian ▁Constitution ▁ent rench ed ▁several ▁prov isions , ▁such ▁as ▁the ▁requirement ▁for ▁a ▁public ▁refer endum ▁to ▁alter ▁how ▁members ▁of ▁parliament ▁are ▁elected ,