Here's Trump's claims debunked in detail: https://www.factcheck.org/2025/08/recapping-trumps-deceptive...

"But we found that Trump’s so-called “reciprocal” tariff rates weren’t based on tariffs that other countries charged on goods coming from the U.S. Instead, the Office of the U.S. Trade Representative came up with the rates by dividing the size of a country’s trade imbalance with the U.S. in goods by how much America imports in goods from that nation. "