Yeah there was a recent one which nullified the federal ban on sportsbetting because the federal government didn't directly ban sportsbetting, instead it banned

Yeah there was a recent one which nullified the federal ban on sportsbetting because the federal government didn't directly ban sportsbetting, instead it banned the states from enacting any new laws which legalized sportsbetting. The reasoning was that the federal government may be able to enact and enforce laws on sportsbetting, but it cannot force the state governments to continue to enforce their laws on sportsbetting if their legislatures want to stop. https://www.supremecourt.gov/opinions/17pdf/16-476_dbfi.pdf https://www.supremecourt.gov/opinions/17pdf/16-476_dbfi.pdf