Multiple federal agencies have overlapping roles with state agencies and offer little value for the “service” provided. One such as example would the U.S. Department of Education, each state has its own. Another example would be EPA and DOE, each state has its own Department of Environmental Conservation not to mention DOE and EPA roles significantly overlap.
I’m not saying they need to be eliminated entirely; however, reducing their role and oversight significantly in favor of state empowerment would lead to significant downsizing, appropriating deregulation, and in some circumstances consolidation / elimination.