The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people.
The Tenth Amendment is the vehicle of republicanism, the engine of Natural Law by which communities at various levels can exemplify the consequences of their differences in policy. It is Law without statutes, bureaucrat enforcers, or overweening judges.
Hence, I am perfectly happy watching the City of my childhood, San Francisco, melt down in depravity. It is teaching all who would see what happens when sexual depravity dictates policy, that any deviation from that degenerate path is not tolerated because it delegitimizes that path. I celebrate the Amish building micro-homes for those who suffered the hurricane, effectively ignoring the bank-driven bureaucratic preference for endless specifications. These are examples of federalism we need to celebrate.
As to California, my hope is that State policy goes ignored in many of its better counties, an elected Sheriff being the ultimate LEO. Best we make the best of this legacy of English Common Law.