Thanks all, sigh, I suppose I will have to just accept that OFN is not going to be the one last thing that causes everyone in the US to accept metric weights and measures. 
Can you help me with the best next steps for letting US devs that this work would be acceptable for them to do? I am very sensitive to the facts that (a) there is always more work - in design, testing, and maintenance - than there appears to be to the unfamiliar eye, (b) this work will not positively impact the global commons or users in other countries (except Canada - @tschumilas this would make some Canadians happy, yes?), and © the US is still not contributing to the global pot financially. So, not knowing the process, I am looking for help with connecting US devs with the product development team in the most streamlined way. Should I ask them to get familiar with github and understand the wiki and then contact you, @luisramos0, or should it work some other way?