Last mentioned: Mar 7, 2026
Statutory Deadline
150-day limit for Section 122 tariffs expires unless extended by Congress.
Washington Meeting
Charette, LeBlanc, and Wiseman meet Greer to discuss CUSMA review and bilateral issues.
Geneva Summit
Scheduled meeting between Abbas Araghchi and Steve Witkoff to discuss the nuclear draft.
Implementation
The new 15% duty takes effect at 12:01 am EST as CBP halts collection of invalidated IEEPA tariffs.
Legislative Vote
Scheduled European Parliament vote on the trade deal faces potential postponement.
Supreme Court Ruling & Warning
SCOTUS strikes down IEEPA tariffs; Trump warns countries not to 'play games' and EU postpones trade vote.
EU Response
European Commission demands clarity and warns of market disruption.
SCOTUS Ruling & Tariff Pivot
Supreme Court strikes down IEEPA tariff use; Trump announces 15% global tariff.
Tariff Hike
Trump announces a temporary 15% global import duty despite the court ruling.
Effective Date
Tariffs expected to take effect 'almost immediately' for all incoming imports.
Duty Escalation
The administration raises the planned Section 122 duty to the statutory maximum of 15%.
Supreme Court Ruling
SCOTUS rules that the use of IEEPA for broad tariff campaigns is illegal.
Tariff Announcement
Trump announces 10% global tariff on Truth Social and signs order in the Oval Office.
Initial Tariff Announcement
Trump announces a 10% temporary import duty under Section 122 of the Trade Act of 1974.
Draft Proposal Initiated
Iran begins drafting a new nuclear proposal following preliminary talks.
SCOTUS Ruling
US Supreme Court rules 6-3 that IEEPA-based tariffs overstepped executive authority.
USTR Grievances
Jamieson Greer cites Canadian barriers in wine and spirits as obstacles to talks.
CUSMA Review
Mandatory trilateral review of the trade agreement to decide on its 16-year extension.
Joint Statement
EU and US reach a trade agreement capping tariffs at 15%.
Diplomatic Freeze
President Trump halts formal trade negotiations with Canada over a provincial ad dispute.
Canada's newly appointed trade team held its first high-level meeting with U.S. Trade Representative Jamieson Greer to address bilateral friction and the upcoming CUSMA review. The discussions signal a potential end to a diplomatic freeze while highlighting persistent disputes over market access and the long-term viability of the trilateral agreement.
The Trump administration is pivoting its legal framework to maintain high tariffs on Chinese goods after the Supreme Court invalidated previous levies based on emergency powers. US Trade Representative Jamieson Greer confirmed the use of Section 122 of the Trade Act of 1974 to ensure trade continuity ahead of a high-stakes meeting with President Xi Jinping.
US Trade Representative Jamieson Greer confirmed President Trump will sign a supplemental proclamation raising tariffs to 15% selectively to ensure trade continuity. The move signals a tightening of trade enforcement, specifically targeting perceived gaps in the USMCA and existing agreements with the UK and EU.
Following a Supreme Court ruling invalidating tariffs under the International Emergency Economic Powers Act, President Trump has pivoted to Section 122 of the Trade Act of 1974. The administration is imposing a 15% temporary import duty while warning global trading partners against abandoning existing agreements.
The U.S. Supreme Court has struck down the executive branch's use of emergency laws to impose broad tariffs, forcing a pivot to a new 15% global tariff framework. Simultaneously, the U.S. is engaging in high-stakes diplomacy with Iran in Geneva, backed by a massive military buildup, to secure a new nuclear agreement.
The European Commission is demanding clarity from Washington after President Trump imposed a 15% global tariff hike immediately following a Supreme Court ruling that curtailed his trade powers. The move threatens a fragile year-old trade agreement and has prompted the European Parliament to consider freezing legislative work on the deal.
US Trade Representative Jamieson Greer has confirmed that bilateral trade agreements remain legally binding despite a recent Supreme Court ruling against the administration's tariff authority. The statement aims to provide market certainty and prevent the unraveling of complex international trade frameworks.
President Trump has signed an executive order imposing a 10% global tariff on all imports, leveraging Section 122 of the Trade Act of 1974. This move follows a 6-3 Supreme Court ruling that invalidated previous tariffs enacted under emergency powers, forcing a strategic shift in the administration's trade enforcement mechanism.
This page surfaces every story mentioning Jamieson Greer across our legal coverage. We track each entity's appearance over time so readers can trace how the narrative evolves — which developments are isolated incidents, which build into longer arcs, and which reframe how operators in the space think about the entity. Story selection uses the same multi-source verification gate applied across the rest of our coverage.
Read our editorial methodology for how we identify, deduplicate, and score entity references. Our glossary defines the technical terms used across stories on this page, and our trends index contextualizes individual developments against the longer-running legal beat. Cross-entity comparisons live on our compare view.
| What you see | What it tells you |
|---|---|
| Story count | Number of distinct stories where Jamieson Greer was a primary or referenced actor. |
| Recency clustering | Whether mentions are concentrated in a recent window (a news cycle) or distributed (a sustained arc). |
| Sentiment distribution | Aggregate sentiment of the stories mentioning this entity, weighted by impact score. |
| Cross-niche links | When the same entity surfaces in our sibling networks, we link to those views to enrich context. |