Trump tariffs inflation impact: Section 301 duties hit 99.4% of imports

Six months after the Supreme Court told Donald Trump he couldn’t tax nearly every import under an emergency powers law, tariffs are back — and this time they came with a paper trail instead of a presidential proclamation. The shift matters well beyond trade lawyers’ desks. Understanding the Trump tariffs inflation impact now requires tracing a longer, more bureaucratic route from customs forms to the Federal Reserve, and from there to markets that include Bitcoin.
Key takeaways
- The U.S. Supreme Court ruled on February 20 that the International Emergency Economic Powers Act (IEEPA) does not give the president authority to impose tariffs.
- The administration launched 60 Section 301 investigations on March 12, citing forced labor practices, and rolled out new duties on July 24, taking effect at 12:01 a.m. ET.
- The new tariffs hit goods from 60 trading partners at mostly 10% or 12.5%, covering roughly 99.4% of American imports, according to CNBC.
- U.S. Trade Representative Jamieson Greer says the new duties shouldn’t shake the economy much because businesses have already adjusted to elevated tariffs.
- Analysts warn the Section 301 basis is legally sturdier than IEEPA, meaning tariffs — and their inflationary drag — could stick around longer, with knock-on effects for Bitcoin through yields, the dollar and Fed policy.
Supreme Court Strikes Down IEEPA-Based Tariffs
The Supreme Court’s February 20 ruling was narrow but consequential: IEEPA, a law built for freezing assets and imposing sanctions during declared emergencies, simply doesn’t authorize a president to impose tariffs. Justices didn’t ban tariffs outright or gut presidential trade power broadly — they closed one specific door while leaving the rest of the toolbox intact.
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