# Jamieson Greer

Type: Person

Source: Startup Intelligence Brief — https://getstartupbrief.com/entity/jamieson-greer
Canonical HTML page: https://getstartupbrief.com/entity/jamieson-greer

## Timeline

- **2026-07-21**: Statutory Deadline — The 150-day window for Section 122 tariffs expires unless extended by Congress.
- **2026-03-15**: Expected Proclamation — President Trump expected to sign a formal proclamation implementing the 15% global tariff rate.
- **2026-02-25**: Greer Clarification — USTR Jamieson Greer confirms China tariffs will stay at 35-50% for continuity.
- **2026-02-24**: Expected Implementation — Tariffs expected to be collected at ports of entry almost immediately.
- **2026-02-21**: Executive Order Signed — Trump signs 10% global tariff using Section 122 of U.S. trade law.
- **2026-02-20**: Trump Response — President announces 'great alternatives' to IEEPA, targeting Section 122 for a 10-15% global tariff.
- **2026-02-18**: SCOTUS Ruling — Supreme Court strikes down previous tariff authority in a 6-3 decision.
- **2025-Q4**: Supreme Court Ruling — Justices block sweeping tariffs imposed under IEEPA, citing executive overreach.
- **2025-02-24**: Parliamentary Review — Bernd Lange calls for a hold on legislative work regarding the U.S. trade agreement.
- **2025-02-23**: EU Statement — European Commission issues a formal demand for the U.S. to honor the 'Joint Statement' trade deal.
- **2025-02-22**: Tariff Hike — President Trump announces a 15% global duty on imports despite the court ruling.
- **2025-02-22**: Diplomatic Outreach — Maros Sefcovic speaks with Jamieson Greer and Howard Lutnick to seek clarity.
- **2025-02-21**: SCOTUS Ruling — U.S. Supreme Court rules much of the administration's international tariff campaign is illegal under IEEPA.

## Recent coverage (5 stories)

### Trump’s 10-12.5% Tariffs Hit 60 Nations, Squeezing Startup Supply Chains
2026-07-24 05:40:14 · Sentiment: Bearish · Impact: 8/10 · Sources: 6

New U.S. tariffs of 10% and 12.5% on imports from 60 countries will raise costs for hardware startups and create openings for supply-chain tech. Founders must navigate thinner margins and shifting trade rules, while investors eye domestic-manufacturing and compliance startups.
Full story: https://getstartupbrief.com/story/trump-section-301-tariffs-startups-impact-2026

### US to Maintain 35-50% China Tariffs as Trump Pivots to New Legal Authority
2026-02-26 00:17:41 · Sentiment: Neutral · Impact: 8/10 · Sources: 2

The Trump administration will hold China-specific tariffs steady between 35% and 50% despite a Supreme Court ruling striking down previous trade levies. USTR Jamieson Greer confirmed the pivot to Section 122 of the Trade Act of 1974 to maintain trade pressure ahead of a critical summit with President Xi Jinping.
Full story: https://getstartupbrief.com/story/us-china-tariffs-continuity-section-122

### US to Implement 15% Baseline Tariff as Trump Targets Trade Gaps
2026-02-25 14:33:36 · Sentiment: Neutral · Impact: 7/10 · Sources: 2

US Trade Representative Jamieson Greer announced a forthcoming supplemental proclamation from President Trump to raise tariffs to 15% where appropriate. The move targets gaps in the USMCA and pressures the EU and UK to adhere to existing trade commitments.
Full story: https://getstartupbrief.com/story/us-trade-representative-greer-15-percent-tariff-proclamation

### EU Demands US Honor Trade Pact Amid Trump’s New 15% Global Tariff Hike
2026-02-23 02:04:36 · Sentiment: Bearish · Impact: 8/10 · Sources: 3

The European Commission has called on the United States to uphold its existing trade agreements following President Trump’s decision to implement a 15% global import duty. This move, occurring immediately after a Supreme Court ruling against the administration’s tariff authority, has injected significant volatility into transatlantic trade relations and global supply chains.
Full story: https://getstartupbrief.com/story/eu-us-trade-tensions-trump-tariffs-ieepa

### Trump Signs 10% Global Tariff via Section 122 After Supreme Court Setback
2026-02-21 02:29:54 · Sentiment: Bearish · Impact: 8/10 · Sources: 2

President Trump has signed an executive order imposing a 10% global tariff on all imports, bypassing a restrictive Supreme Court ruling by utilizing Section 122 of U.S. trade law. The move creates an immediate 150-day window of increased costs for global supply chains, requiring Congressional approval for any long-term extension.
Full story: https://getstartupbrief.com/story/trump-global-tariff-section-122-supreme-court

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