Tristan BillsUtah's Proposition 4 requires legislative involvement, not legislative control. The Legislature was given the opportunity to act, with clear constitutional standards and the benefit of an independent commission, and it failed to produce a lawful map.
At that point, the process contemplated by Prop 4 had been exhausted. The Legislature does not get infinite retries, nor does it get to nullify voter approved reform by inaction. When a political branch fails to meet constitutional requirements, the judiciary has both the authority and the obligation to provide a remedy.