I finally have a solution for the number one problem affecting the USA. That of course is the continued lack of adoption of the metric system, with a small side order of "use 24 hour clocks".
The solution is mandatory service in the military or NASA as picked by the people affected. Both organisations use metric and 24 hour clocks, so the blight of imperial units can finally be wiped out (and I no longer have to ask "which 8 o'clock did you mean?").
There are other benefits. It will help alleviate the high new- graduate unemployment rate, help more people understand the budget spending (~20% goes on military, ~0.5% on NASA), get more youth to vote since they will be affected by politics, wars, science etc and finally help with education since kids will know they need to prepare for their choice. A flawless plan!