Apparently there’s been a trend of cities bucking preemption:
Unfortunately, upon the passage of Iowa’s new “Shall-Issue†Right-to-Carry law, some local governments began creating a patchwork of illegal gun bans across Iowa.  Most recently, claiming safety issues, Iowa Citypassed a resolution restricting all law-abiding Iowans from carrying in or on all city-owned property including city parks, buses, and even farmer’s markets.
NRA is pushing a bill to fix this problem, HSB 19. Everyone is Pennsylvania should take a look at this bill, because it’s among the strongest preemption statutes I’ve seen. This might be something we need to look at here.