Honestly I think a main way it could be adopted is imposition by the courts -- we've seen increasing cases of "stalemates" where states can't seem to produce maps acceptable to the courts at all. So courts do have the ability to say, "if you can't produce a satisfactory map, we will, and this is it."
I'm not saying it's easy or quick, I'm just saying it's in the realm of the possible, unlike PR.
Honestly I think a main way it could be adopted is imposition by the courts -- we've seen increasing cases of "stalemates" where states can't seem to produce maps acceptable to the courts at all. So courts do have the ability to say, "if you can't produce a satisfactory map, we will, and this is it."
I'm not saying it's easy or quick, I'm just saying it's in the realm of the possible, unlike PR.