I'd like to see a change in voting system to make voting for smaller political parties more viable. My country did this in 1993[1] so I've seen to some extent that it works. A lot of other issues in the US seem downstream from that top-level issue.

But sometimes I think about the fact that you guys don't even have the metric system yet...

[1] https://en.wikipedia.org/wiki/1993_New_Zealand_electoral_ref...