In the 2021 regular session of the Colorado Legislature, HB21-1037 was introduced by Representative Matt Soper and Senators Bob Rankin and Ray Scott. The bill sought to limit the areas where the wolves are reintroduced into to those which voted for Proposition 114 and those which are not home to animals which are the prey of gray wolves and designated by Colorado Parks and Wildlife to be threatened or endangered. A non-partisan analysis from legislative staff commented that the bill "would appear to rule out any reintroduction". The bill failed to progress from the Colorado House Energy and Environment Committee in February 2021.
