If we let states have more power, they may enact good or bad policies that others cannot as easily enjoy or escape because of their financial or family standings prevent them from moving. National policies allow everyone to benefit from good policies.
While this is true, the reality frequently seems to be that no bold policy is made or maintained due to polarization or perceived risk. Isolating policies to places willing to try them out is a better outcome. If the policy seems valuable, more states will adopt it
And if you have bad policies nationally, it’s even harder for those less privileged to escape them due to things like immigration laws, costs, language barrier, xenophobia, etc
Speaking as an immigrant: yes, absolutely! Legal immigrants generally have to be quite privileged in their place of origin to have the education level necessary to clear the bar in most places to be considered for any kind of visa that allows permanent residency, and to be financially well off enough to afford both the paperwork and the move itself.
I added the qualifier "legal" because that's the one I can speak of from experience.
For illegal immigrants, I would say that if successful in crossing the border, they are in a more privileged position compared to their compatriots who did not. Not more privileged than citizens or legal immigrants here, though, that's for sure.
