That and also, they're one of the last countries in the world that STILL doesn't use the metric system.
This puts kids in America at a disadvantage, since most jobs like a car technician deal with metric tools, and when they grow up and don't know how to use the metric system, they're going to fail their job.
To convert America to the metric system it costs money, and what I mean is that companies will have to change their boxes, shipping labels, etc., and it costs money.
And when you live in a country that's overrun with for-profit companies that are influencing the government to control America their way, they're not going to do it, and they only care about themselves, since if they cared about kids' future, we would have been metric a LONG time ago. But nooo. And I don't know WHY.