I can only speak on Florida because truthfully that's really all I follow. I do know however just from what has been passed to me, this has happened in other states as well.
Almost every sheriff in Fl has stated and in the case of my sheriff sent a letter statin we will NOT enforce ANY federal law restricting a persons lawful right to the second amendment. More specifically high capacity magazines and "assault weapons". Now that being said, anyone ever see how the federal law enforcement agencies work? Have any first hand experience with them? Theres not enough for a door to door search looking for guns.
Also check this website out, before everyone starts talking about the cops and military coming for your guns.
http://oathkeepers.org/oath/