The reason this doesn’t work as well as you’d hope is that there are confounders that make it difficult to apply Norway’s experiences to the US. The design of u

The reason this doesn’t work as well as you’d hope is that there are confounders that make it difficult to apply Norway’s experiences to the US. The design of using a “natural experiment” where a localized change lets you measure before/after at a discontinuity is a good way of solving this. That’s what this paper looked at to test their model.