The Feds should do what Texas did as of 1/1/2016. Texas took the power of gun restrictions and control out of the hands of local governments. They can't even post the obligatory 30.06/30.07 signs* for entire public-access government buildings. Only those rooms actually used for government functions are restricted and allowed to have signs. The AG has already taken many communities to task over the law that also provides a hefty monetary fine.

(*) "30.06/30.07 signs" refers to the code segments that allow entities to restrict access to property for those with concealed/open carry handguns respectively. These signs are most often used by retail outlets.