Question juridique clé
Standing of the various appellants to bring an abstract norm challenge
Solution extraite
Only KABBA and Z.________ had standing; the other organizational and individual appellants lacked sufficient substantiation of virtual or actual concern.
Motifs extraits
The court required concrete showing that a substantial part of members would likely be affected by social assistance rules. Several appellants failed to substantiate this; KABBA represented persons likely to be affected, and Z.________ was herself on social assistance.