Trump changes his mind, having already changed his mind after he'd changed his mind.
Given the uncertainty his policies have engendered, I reckon many customers and suppliers of US firms will be seeking alternatives, unable to rely on their American partners. Which of course will harm the long term prospects for the US economy.
"Trump delays tariffs on many products from Mexico and Canada"
https://www.theguardian.com/us-news/2025/mar/06/trump-canada-mexico-tariff-delay-exemptions?CMP=Share_AndroidApp_Other