We don’t have the tooling to build either B-1s or B-52s.
...or for that matter, A-10s.
Ya know, I’m sick of hearing about tooling.
The tooling didn’t exist before they were originally built. Tooling can be rebuilt. And with today’s production tools for making tools; it will be, or can be quicker. The blueprints still exist after all, not to mention a whole boatload of folks who’ve been flying, maintaining, and upgrading them ever since they came off the line.
The problem isn’t tooling, or capability - it’s the will!