Municipalities from Florida to Utah have similar laws.
Nahles said protecting German municipalities from "financial overload" was also crucial to the decision.
It is pre-empted by a 2011 state law that bars municipalities from adopting firearm regulations.
Using Legacy money, the county has so far built fields in seven municipalities from Yonkers to Peekskill.
Both have reason to be proud of what they achieved after inheriting troubled municipalities from their predecessors.
They have mounted major lobbying campaigns in several states to restrict or prohibit municipalities from establishing their own networks.
Last year, Mr. Bush signed legislation that prohibits Texas municipalities from suing gun makers without approval of the State Legislature.
Gun owners said the ordinance was unlawful regardless, because of a state law that prohibits municipalities from regulating firearms.
Opponents of the law argue that California law sets a minimum age of 18 and that the provision prohibits municipalities from setting a higher limit.
But that bill also carried an unexpected provision: a law that would have prevented municipalities from having any control over local factory farms and their manure disposal.
Bloomberg officials said the mayor was likely to veto the legislation, contending that federal law prohibits municipalities from regulating the terms of employee health care plans.
