Americans are ready to have only one system.
Dual units are more confusing.
I am a native-born American, and in school I was taught measurement only in the metric system. Even in England, the BBC uses metric units, mostly by themselves although sometimes with non-metric units following in parentheses. I don't like having to go to foreign news sources to read reports that use units I understand. They have little or no understanding of non-metric units. In the future, please use only metric units in your reports.