General Discussion

They've proudly put forward an economic policy that has economists the world over saying "WTF? That's ridiculous. That'll cause a recession, at best".

Truss did it in a parliamentary system, so she lost the confidence of her party, and had to resign (like the House Speaker needs the confidence of his majority). Truss didn't outlast her lettuce.

In a presidential system, Trump's a lot harder to dispose of. You can't impeach for stupidity. It's dumb, but no Republican is going to say it's in the realm of the 25th Amendment "unable to do the job" reasons to chuck him out. But Congressional Republicans might just take back control of tariffs so that they can save their seats in 2 or 4 years' time.

Or several rich people might simply bribe Trump to resign, if that's what it takes. It'd still be worth it for them.