Some things are reasonable for different states to do differently, but having a minimum bar for police training should not be one of those things. Lot's of things should have minimum bars set federally that states are free to improve upon. Why should policing be so different across different states? Are humans innately different once you cross a state line? Why should justice work differently across state lines?

> Some things are reasonable for different states to do differently, but having a minimum bar for police training should not be one of those things

I disagree. Since having radically different roles and powers for police, rasically different organizational structures for poloce, or not even having anything that exactly fits the typical concept of “police" are also within the acceptable variation, and all of those factor in to minimim quals, minimum quals for police absolutely are legitimate.