The states are every bit as sovereign now as they used to be, and, ultimately, hold sovereign power over the federal government.When states had more rights it made more sense, but now states aren't really as sovereign in nature as they used to be.
Never forget that the US is a group of 50 states, not one state with 50 divisions.
The only problem we have is that the federal government has overstepped its constitutional powers and infringed upon the power of the states. FDR started this movement and now it will be up to the next generation to correct.