Brokenhead, I think you may have missed the meaning of the Mendenhall order of 1893. It defined the length of the yard and pound in metric units as I recall. It did not reject our standards of weight and length measurements, I assume that would take an act of congress.
As a person who has dealt with this his whole working career I have seen several attempts to abandon the English measurement system only to see it smashed on the rocks. Old habits die hard.
Another measurement that "get my goat" is temperature. Ask just about anyone what the Fahrenheit scale is based on. They don't know nor care but interesting just the same.
Sorry to steal this thread.