United States should change it's measurement system to S.I. unit system instead of English based system. It is because, most of the countries in the world uses that, so it would be easy for our Scientists to deal with them.
If United states did make this switch, then we would use only S.I. units like kilogram for weight instead of pounds, meter for length instead of foot, so it would be easy in communication with rest of the world
Hope this helps!
