▁constitution al ▁status ▁of ▁the ▁Supreme ▁Court , ▁holding ▁that ▁the ▁Court ▁has ▁been ▁constitution ally ▁ent rench ed ▁by ▁the ▁Constitution ▁Act , ▁ 1 9 8 2 , ▁and ▁that ▁the ▁composition ▁of ▁the ▁Court , ▁including ▁el ig ibility ▁for ▁appointment , ▁can ▁only ▁be ▁am ended ▁by ▁a ▁un anim ous ▁constitution al ▁am end ment , ▁cons ented ▁to ▁by ▁the ▁federal ▁government ▁and ▁all ▁ten ▁provinces ▁( though ▁if ▁any ▁more ▁provinces ▁are ▁formed , ▁those ▁provinces ▁must ▁also ▁accept ▁the ▁am end ment ▁requiring ▁un anim ity ). ▁ ▁Background ▁The ▁case ▁arose ▁when ▁the ▁federal ▁government ▁appointed ▁Justice ▁Marc ▁Nad on ▁to ▁the ▁position ▁of ▁puis ne ▁justice ▁of ▁the ▁Supreme ▁Court ▁of ▁Canada , ▁on ▁October ▁ 3 , ▁ 2 0 1 3 . ▁ ▁At ▁the ▁time ▁of ▁the ▁appointment , ▁Justice ▁Nad on ▁was ▁a ▁super numer ary ▁judge ▁of ▁the ▁Federal ▁Court ▁of ▁App e al , ▁having ▁served ▁on ▁the ▁federal ▁courts ▁for ▁over ▁ 2 0 ▁years . ▁Justice ▁Nad on ▁had ▁been ▁a ▁member ▁of ▁the ▁Quebec ▁Bar ▁prior ▁to ▁his ▁appointment . ▁ ▁Ontario ▁lawyer ▁Roc co ▁Gal ati ▁challeng ed ▁the ▁appointment ▁in ▁the ▁Federal ▁Court ▁of ▁Canada , ▁arg uing ▁that ▁Justice ▁Nad on ▁was ▁not ▁el ig ible ▁to ▁be ▁appointed , ▁as ▁he ▁was ▁neither ▁a ▁member ▁of ▁one ▁of ▁the ▁superior ▁courts ▁of ▁Quebec , ▁nor ▁a ▁current ▁member ▁of ▁the ▁Bar ▁of ▁Quebec . ▁The ▁Quebec ▁government ▁also ▁question ed