I don't believe so. I think there may be some regulatory changes needed once STIR/SHAKEN is done.
Currently carriers are not responsible for the calls they place on networks. Once STIR/SHAKEN allows you to identify which carrier is the source of a call, then you could probably empower the CRTC to.... If a carrier were known to be the source of a large majority of fraud calls, they might then somehow be found liable for those calls.