I'm not a huge fan of the 14th amendment, the way it was passed, nor even the most unfortunate history that opened the door to it. I'm really not pleased with how even its broad original intent is being grossly ignored to force my State to grant marriage benefits to conduct that is not marriage.
But so long as the 14th amendment stands and it is used to justify federal protection of all manner of newly invented "civil rights", can you give me any good reason why we shouldn't be happy to see that power (already grossly misused), used appropriately to protect our RKBA from gross infringements in a few bigoted hold outs?
Let us remember that it isn't just that Illinois, NY, NJ, Cali, and others infringe our rights while within their borders. But they slap us with a felony for doing what is perfectly legal on the other side of a line on the map and suddenly we've lost our RKBA for life, nationwide. And yes, we need to repeal that lifetime loss of RKBA at the federal level.
But we also need to enforce our RKBA with at least as much devotion as protect freedom of speech, freedom of religion and the of the press, our rights to an attorney and so on. If NJ were locking people up without benefit of counsel or due process, would anyone really have heartburn with the feds enforcing the 4th and 5th amendments against them? If the Utah Mormons were refusing to let Protestants build churches or the Texas Evangelicals forcing the children of atheists to participate in school prayers, would anyone object to the feds enforcing the 1st amendment in these States?