I’m not an economist. But I know some people who are.
And they don’t seem very impressed with Trump’s tariff plans:

Oof. But I am a scientist, so I know how a graph should look, and perhaps more importantly, how it shouldn’t look. That there isn’t a good look. If this was a patient, they’d be on their way to ICU.
$2 trillion gone in less than half an hour. Poof!
You can say many things about Trump (and people do), but you can’t knock his power. Even 80s magician David Copperfield is impressed, and he made the Statue of Liberty disappear.
Trump is just making money vanish. Well, that and actual Liberty.
Still, you can’t argue that these things haven’t been well thought out. There’s clearly been a lot of planning that’s gone on here. The penguins of the Heard and McDonald Islands are finally paying the price for their frankly heinous 20% import tariffs on American goods. Famed for exporting Elephant Seal Oil as recently as… er… 1877, it seems like the infamous H&McDI Stock Exchange would be in all sort of bother if it actually existed.
No-one has lived there for decades, but these tariffs mean that if anyone ever does live there again, they won’t be exporting much to the US.

Elsewhere, the EU (including France) gets a tariff of 20%, but Réunion (part of France and therefore also part of the EU) gets hit with 37%. But of course, French Guiana, Mayotte and Martinique (each part of France and therefore also part of the EU) get a 10% tariff on their exports to the US.
Réunion has had it too easy for too long.
The big losers in this whole thing is everyone. But if I were to be more specific, it would be St Pierre & Miquelon. This isn’t a French overseas territory: it’s a French Overseas Collective – Collectivité d’Outre-Mer.
But because of… er… reasons, their exports to the US will be charged an additional 50%. That’ll teach them for being to close (geographically, not necessarily politically) to Greenland.
Only local boys Lesotho (as far as I can see) manages to match the heady height of a 50% tariff, so Southern African
diamonds, garments, wool, power equipment and bedding
markets will be hit. And it looks like the mokorotlo won’t be part of the New York Spring 2026 Collections anymore.
It’s the clear attention to detail that makes me think that maybe these tariffs might well have been devised by a troop of circus monkeys who have been blindfolded and then instructed to throw various coloured darts at a world map.
I’m just impressed that there was anyone in America who was able to work out which countries the darts hit.