The fact that Americans are, in popular culture, famous for being unable to find places on the map, doesn't mean that it's safe to ignore what happens in such places.

Also, I didn't say it was the most important issue in America today. I'm sure America can multi task.

And the only sons and daughters dying are those of the Ukrainain and Russian victims of Putin.

Point is, even if you don't give a shit about what happens in Ukraine, failing to act will lead to huge costs for you, a US taxpayer, later. If you want to minimise costs, and even if that is the ONLY reason, you should support Ukraine.