I think it was the other way around. Officials at the CDC determined that 6ft would be a good guideline for social distancing and it translated to 2m for countr

I think it was the other way around. Officials at the CDC determined that 6ft would be a good guideline for social distancing and it translated to 2m for countries that more widely used the metric system. Dr Fauci talks about this point at the 1:50 mark https://www.youtube.com/watch?v=_EETzkOjpyg https://www.youtube.com/watch?v=_EETzkOjpyg