The biggest issue with trying to overturn the NFA is that with today's soccer mom mentality, it would not stand a chance. Too many voters do not think that we should be allowed to own NFA weapons and no politician would touch it . As for attacking it on a constitutionality basis, the Heller decision barely passed 5-4 and that was only dealing with handguns. I think the only thing that would happen by pushing for repeal of the NFA would be our current regime realizing that the $200 tax has not been changed since 1934 and they would "adjust it for inflation" which would be about $3400 today.
I agree. Now is not the time. Maybe if a more libertarian mindset becomes the norm, we can push for repeal. Until the current nanny state mentality is changed, no good can come of this.