Those things have to go side by side with an actual nuclear warhead program though. Otherwise its just unnecessary risk, sitting with your pants in your ankles, waiting the other to catch-up.IMO, We are not so desperate as to 'announce to the world' that we will develop nuclear weapons.
I think our main focus is on achieving a fully isolated, independent capability in the launch platforms and command-control circle for various types of medium-range missiles. Then, to increase the variety of missiles and rockets both at cruise missile flight envelopes as well as boost-glide trajectory and balistic missile trajectory.
TBH If we did ever acquire nukes, I would want them to debut in combat. Complete silence until it becomes necessary. But I also want to see some action in that field. Hence my dilemma.