The only thing a state like New York will recognize is a concrete ruling against them by SCOTUS. That is not going to happen unless an offended gun owner with a lot of time on their hands and a shed load of money to burn takes them to court. Even then, it assumes that SCOTUS would even hear the case. Also, it would take YEARS to get that far. All states with dodgy statutes on many subjects play this game.

The DoJ are reluctant to step in even if a complaint is made direct to them as they know the howl of "states' rights" would immediately go up. Also, with the short election cycles we have compared to the apparently infinite inertia of the court system, the chances are there would be at least one change in administration before the case really got going. You could almsot guarantee one of those administrations would "advise" the DoJ to cease and desist. Welcome to America in the 21st century.

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Release the Kraken