I gotta remember the phrase "felon with a gun is not the default setting" and another I forgot.
I think "a felon in possession of a firearm is not the default status" is from US v Black. Though, this ruling takes a very similar tack, albeit without using exactly the same phrasing. Guy quotes the money shot in his article:
"The United States Supreme Court has previously declared that law enforcement may not arbitrarily detain an individual to ensure compliance with licensing and registration laws without particularized facts supporting an inference of illegal conduct. See Prouse, 440 U.S. at 663 ('hold[ing] that except in those situations in which there is at least articulable and reasonable suspicion that a motorist is unlicensed or that an automobile is not registered, or that either the vehicle or an occupant is otherwise subject to seizure for violation of law, stopping an automobile and detaining the driver in order to check his driver’s license and the registration of the automobile are unreasonable under the Fourth Amendment'). In like fashion, we decline to endorse such behavior to ensure compliance with Indiana’s gun licensing laws."