Whether or not it's enforced, it's still a war crime. History will recount it as an atrocity, with footnotes that putting Trump in power was a bad thing, and we as a people should reflect on how to not do anything like that again.
I mean, granted, we try to live down the genocide of the first nations here in the US, or our economy depending on slave-run sugar and cotton plantations, but it keeps coming back to haunt us.