I don't think we can.

Any attempt to do so will be resisted by the government as the meddling of the imperialists, to be opposed at all costs. We either have to invade to remove the government by force (and kill a bunch of the army), or we can do very little.

One thing that we might, in other circumstances, do, is to tell Columbia, for example, that any refugees that come over the border we will take, so that they don't need to try to keep them out. But under current political circumstances in the US, even that seems out of reach...

It’s a self-inflicted wound. You can’t help. They’ll just keep killing themselves.