Edit: yes, we should absolutely use Federal power to force states to recognize - and not infringe - on Constitutionally-protected rights.
"Assault weapons" bans? Gone.
NFA? Gone (in while or at least in part)
CCW reciprocity for everybody.
Only one Liberal Democrat {sic? Why sic? Seems to be the correct spelling to me} to end the rights in all 50 states? Um, have you studied how legislation works in the United States? Mexico? Really?
Why yes, yes I do understand, thank you for inquiring.
I suppose you could say it took two, if you want to count both Hughes and Rangel, in the case of select fire weapons - technically not a full ban, of course, but close enough for government work.
Add the four letters of "semi" to "automatic" in a ban, and I would consider that an evisceration of the 2A. They are working on that one for the coming year in California.
Dog Soldier asked rhetorically about "one liberal Democrat". So while inaccurate, I presumed his intent: in some theoretical future scenario where the liberal Democrats control the federal government - one liberal Democrat comes up with some imaginative idea (I don't know, requiring UBCs, and then revoking all FFLs, etc. who knows?)... some idea that would de facto outlaw CCL or even evicerate the 2A as a practical matter - so one comes up with the idea, enough of the other like-minded Congress critters nod in slack-jawed agreement and a liberal Democrat POTUS eagerly signs it whilst frothing at the mouth and declaring gun-free utopia is upon us.
So yes, it would take more than one.
My POINT is that for the pro-RKBA crowd, to refrain from Federal legislation - legislation to ensure citizens in all states can enjoy their rights without molestation - out of respect for states rights, because at some future date the anti-RKBA people might use Federal legislation to restrict everyone is silly - the Anti's will use Federal legislation every chance they can get - they just haven't had much chance of success, lately.
One of big reasons for the Constitution and the Federal government is to protect the rights of all citizens.
States don't get to just randomly infringe on any of the other amendments in the BoR, after all.
And no, changing or adding an amendment to the Constitution isn't necessary at all - they can do it with just a law, and creat havoc for the many years it takes for the SCOTUS to strike it down - which notably -still- hasn't occurred with the outlandishly silly state "assault weapons" bans.
Yes, this is certainly fraught with danger - the Hughes amendment being a perfect example. Option B is simply to continue losing ground, while something like a third of the country has infringement after infringement piled on, along with anyone who happens to travel through those states.