"Apparently he said that if elected president, Chaffee would bring America to the metric system... Well that's one way to create a job stimulus LOL."
There's not much left to do. The U.S. military has long been on the metric system. To work on foreign cars the mechanics all have metric tools. We buy soft drinks, liquor, wine, and pharmaceuticals in metric quantities. Beer and gasoline are what is left in ounces and gallons.
When the Olympics were being held in Atlanta (1996) the Alabama DOT added kilometers to the interstate road signs to accommodate the visitors attending the events held in Alabama. The Governor ordered the old signs put back because he didn't want that "foreign system" on our signs. So the signs went back to only having distances in the English system.