Start converting the nation to the metric system.

We are living in a metric world where just about every country, except the USA, uses the metric system, and other countries are now telling us that they don't want to buy some of the products manufactured by U.S. companies if they aren't made to metric sizes (and if they aren't labeled in metric units). Many European Union countries, which have been good customers of U.S. companies, don't allow products into their countries unless they are made to metric system standards. There will be a cost is making the change internally as road signs are replaced, and education is changed, but this will create jobs to offset it. Once the change is complete, many other benefits will follow.