I believe they toyed with the idea back in the early 70's. Even had a date set for the change over to metric. Then sombody realized that It would have cost billions for American industry (the aerospace industry in particular) to completely retool.
The percentage you're paying is too high-priced
While you're living beyond all your means
And the man in the suit has just bought a new car
From the profit he's made on your dreams
