Insurance premiums are more expensive in Massachusetts than any other state. Of course the general cost of living is more expensive than in most other states, so there is no reason health care and by extension insurance should be exceptions. Of course, health care and outcomes are significantly better than in Mississippi and the states insurance regulations are likely a contributing factor.

The problem with forcing states to recognize licenses granted by the governments of other states is that some states have significantly weaker, and less effective licensing protocols. By mandating recognition, the federal government essentially makes the poorest licensing protocol the national one.

I'm also surprised that the CATO Institute would support such a violation of states rights. Afterall, they certainly wouldn't advocate that the federal government force states to recognize all marriages granted in other states.