Thank you Alex, I actually got too busy working for a few minutes here to do anything else.
Looks like the US had everything scheduled for conversion long ago, but then it was very watered-down not long back, for whatever reasons (cost, complaints from political lobbyists?).
I see a new term "hard=metric," meaning the end of the dual-system, apparently. So I guess we are "soft-metric" currently.
The Anonymous Bureaucrat, and frankly, quite content not to be a member of either major US political party.