The United States of America is a federal republic, where the federal and state governments both have their own powers. This is in contrast to a unitary system, where the federal government (Washington D.C. in this case) has complete sovereignty over the affairs of the entire state.
(image source: https://upload.wikimedia.org/wikipedia/commons/thumb/8/80/Flag_map_of_Indiana.svg/490px-Flag_map_of_Indiana.svg.png)
In line with how the founding fathers created this country (as a federal republic), I believe that the states should have more sovereignty than they have right now. States’ rights are important, and more of an effort needs to be put forward to respect more of states’ rights.