William O. Douglas,
United Automobile Aircraft and Agricultural Implement Workers of America v…
“ Of course the States may control violence. They may make arrests and invoke their criminal law to the hilt. They transgress only when they allow their administrative agencies or their courts to enjoin the conduct that Congress has authorized the federal agency to enjoin. We retreat from Garner and open the door to unseemly conflicts between state and federal agencies when we sustain what Wisconsin has done here. ”
