Getting to your specifics, the NRA and I assume a large fraction of its membership know the government knows the latter are gun owners, it's very very hard to keep that secret, and most of us don't bother. Why bother when that's probably over half the nation's people?
Heck, if you subtract the states and localities where very few are allowed to own guns, just randomly picking people using a few simple profiling techniques would result in a very high hit rate.
I just don't see it as being a significant enough direct threat for the NRA to adopt it as a major issue like McCain-Feingold.
I never heard a single speech by Wayne LaPierre which would lead me to conclude that the NRA is interested in limiting itself to a single issue.
> I just don't see it as being a significant enough direct threat for the NRA to adopt it as a major issue like McCain-Feingold.
But you seem to understand that.