Federal law does trump state law EXCEPT the 10th Amendment. If its not spelled out in the constitution or bill of rights the states have authority to regulate or not regulate it. The 10th Amendment is the ONLY reason medical cannabis is legal in some states. States can also decide that fully automatic firearms and silencers are legal within that state.
But the big caveat is whether you get arrested by state authorities or federal authorities. If you're arrested by federal authorities you have no rights period. You're only right is to plea bargain.
Its time to have a true patriot governor step forward and make the argument that the 10th Amendment is clear. The feds have no authority to operate inside a states boundary unless that governor gives them permission to.