There are some aspects where 2A intersects with other rights, where NRA and others are unwilling to go.
One sticking point right now is drugs. Per federal law, any "user of an unlawful substance" is prohibited from firearm ownership, period. This includes anyone in states that legalized marijuana, including medical users. And the feds have been trying to maintain state records for medical marijuana card holders.
NRA, SAF and the rest of the bunch are unwilling to not just do anything about it, but to even speak out at all. I'm a SAF member, and I actually wrote to them about this several times, with no response. Ironically, the only gun rights org that has been consistently speaking out on this is the otherwise extremely right wing GOA.
And recently, both NRA and SAF organizations have enthusiastically endorsed Jeff Sessions, which is a huge middle finger to anyone concerned about this law...
That said, ACLU generally does get involved in cases which are centered on 2A, but involve other rights. So my hope is that they'd get involved in this as well, if a suitable case came up.
The fact that there are larger and more specialized organizations doesn't prevent the ACLU from making a simple statement in favor of advances in this particular civil liberty.
