Already in Motion
The Trade Investigations already underway
Already in Motion
The Trade Investigations already underway
By Barry Appleton | Appleton’s CLAUSE & EFFECT Substack| 7 June 2026 · Part 2 of 3
The USMCA-CUSMA Joint Review officially opens July 1. Section 301 investigations targeting Canadian interests are already running at three distinct stages of the enforcement process. The Section 301 investigations are the pipeline, and the calendar that governs it.
This is the second piece in a three-part series on the new architecture of American trade policy. Part One, “Reciprocal in Name Only,” published yesterday, explains what the Agreements on Reciprocal Trade are and why calling them reciprocal is misleading. This piece maps the Section 301 investigations targeting Canadian interests that are already in motion before the USMCA-CUSMA Joint Review opens. Part Three, “Settled Out of Congress,” publishes on Monday and examines the legal authority underpinning the entire architecture. The economic stakes across all three questions are analyzed in No Going Back, Know Your Ground, and The Exits Exist.
Canada does not enter the USMCA-CUSMA Joint Review at the beginning of a trade dispute.1 It enters in the middle of one.
The Joint Review officially opens July 1. Three Section 301 investigations covering Canadian interests are already running at different stages of the enforcement process. One has reached the proposed-action stage, with a public comment deadline five days after the review officially opens. A second is drafted, armed, and pointed at Canadian digital and cultural policy, with a congressional bill already filed and Canada’s own broadcasting regulator having just handed Washington an escalation it did not need. A third has been formally announced by the Trade Representative and is approaching the initiation stage.
The Trade Act of 1974 gives Section 301 investigations a mandatory procedural sequence: initiation, consultation, determination, proposed action, public comment, final action. That sequence is the administration’s binding procedural constraint. It is also why the threats most relevant to July 1 are those already in the pipeline, not those Washington might announce next week. For Canada, three tracks are already running. They are not the ceiling. Ambassador Greer has publicly announced the intent to open additional investigations covering pharmaceutical pricing and discrimination against American technology companies, digital goods, and services. But those have minimum timelines. The ones cataloged here will be fully operational on or around July 1.
The foundation: how we got here
The Agreements on Reciprocal Trade, explained in Part One of this series, (“Reciprocal in Name only”), rest on Section 301 as their enforcement platform. The U.S. Supreme Court struck down the IEEPA tariffs in February.2 Section 122 expires July 24. What remains standing is Section 301, the litigation-tested statute, with its settlement option and its four-year renewal cycle. Every Section 301 investigation against Canada is simultaneously a tariff threat and a settlement offer. The settlement instrument on offer is an Agreement on Reciprocal Trade. The investigations cataloged below are the mechanisms by which that offer is made and enforced.
The investigation at the door
The forced labour action: at the proposed-action stage. In March 2026, USTR initiated sixty-economy Section 301 investigations into the failure to impose and effectively enforce a prohibition on the importation of goods produced with forced labour.3 Canada was one of the countries named. In June, USTR made its determination: actionable conduct was found across all sixty economies. The proposed remedy is a two-tier additional duty: 10 percent for economies with a prohibition on forced labour, an Agreement on Reciprocal Trade commitment, or a partial regime, and 12.5 percent for all others.4
Canada qualifies for the 10 percent tier through its existing forced labour prohibition, enacted to implement its obligations under USMCA-CUSMA Article 23.6.5 USTR’s theory for keeping the investigation live is specific: Canada has the prohibition and is barely enforcing it, with few or no shipments detained at the border.6 An enforcement complaint of that kind is infinitely renewable. The 10 percent tier is not a permanent exemption. It is conditional grace.
Requests to appear at the Section 301 hearing are due June 22. Written comments close July 6. That deadline falls five days after the Joint Review is scheduled to open. Canada can appear formally and argue for the USMCA-CUSMA forum, or it can allow the unilateral tariff track to advance without a response. The legal argument for the forum and why the forum-selection clause in the Trade Act applies to this investigation are set out in Part Three of this series and in section III of my fuller paper, Know Your Ground.
The USTR’s forced labour comment deadline is July 6. That is five days after the formal USMCA-CUSMA Joint Review opens. It is clear that the investigation already armed
The digital services and streaming investigation: drafted, loaded, and pointed. Canada repealed its Digital Services Tax in March 2026.7 The investigation machinery did not close with it. Ambassador Greer testified before the House Ways and Means Committee in April that Section 301 actions against digital services taxes have been drafted and stand ready for deployment.8 Nine Agreements on Reciprocal Trade already contain commitments prohibiting digital services taxes, providing the settlement template for what Washington wants from Canada on digital platforms.9
As I set out in “USTR’s Opening Brief: How to Read the 2026 National Trade Estimate Report Before It Reads Canada“ (Clause and Effect, April 8, 2026), the U.S. National Trade Estimate Report is not a catalog of trade concerns. It is a litigation brief for the USMCA-CUSMA review. The 2026 edition identifies Canada’s Online Streaming Act, Online News Act, sovereign cloud Request for Information, Quebec’s Bill 109, and Canada’s pharmaceutical pricing practices as measures under monitoring for USMCA-CUSMA implications.10
Every measure listed in the 2026 National Trade Estimate Report is a candidate for the next stage of enforcement.
Two developments since that April 2026 Substack post have considerably sharpened the threat.
On March 19, 2026, Representative Lloyd Smucker and five other Republicans on the House Ways and Means Trade Subcommittee introduced legislation directing USTR to launch a Section 301 investigation into Canada’s Online Streaming Act within 30 days of enactment, with a 180-day compliance window and mandatory retaliation triggers.11
On May 21, 2026, the CRTC issued Broadcasting Regulatory Policy CRTC 2026-96, requiring large streaming platforms operating in Canada to contribute 15 percent of their Canadian revenues to Canadian content funds, tripling the 5 percent base rate the CRTC established in 2024 and that the major U.S. platforms are already challenging in the Federal Court of Canada.12 U.S. Ambassador Pete Hoekstra called the decision discriminatory against American companies within four days.
The CRTC tripled a levy that Washington had already targeted, while a congressional bill to direct a 301 investigation was on the House floor. That is not strategic ambiguity. The Online Streaming Act, the Online News Act, the sovereign cloud RFI, or Quebec’s algorithmic discoverability requirements can each serve as the triggering conduct for the armed investigation. The repealed Digital Services Tax was the predicate; these are the successors.
Canada’s Digital Services Tax is gone. The investigation machinery is not.
As I noted in my Substack, “The Taunt as Data“ (Clause and Effect, April 26, 2026), the U.S. administration sends signals that Canada has not been reading correctly. The CRTC’s May 21 decision, announced without visible coordination with Canada’s trade negotiating team, confirms the structural problem. A government that had rebuilt its Sectoral Advisory Groups on International Trade would have identified the CRTC’s decision as a Sec 301 trigger weeks before it was made, as I argued in “Canada’s First Shot Across the Bow“ (Clause and Effect, May 9, 2026). Instead, the CRTC handed the administration’s lawyers the escalation they needed.
One development this week extended that list. On June 4, 2026, two days before the USMCA-CUSMA Joint Review window unofficially opened, Prime Minister Carney launched “AI for All,” Canada’s national artificial intelligence strategy.13 The AI for All sovereignty pillar commits to building a world-leading public AI supercomputer and investing in “sovereign compute and cloud infrastructure, under Canadian governance,” with government procurement as the funding mechanism. Its trust pillar commits to introducing an online safety regime for chatbots and social media users, strengthening privacy protections, including against surveillance pricing, and expanding the Canadian AI Safety Institute to conduct transparent evaluations of AI models.
Every item in that AI for All list appears in the 2026 NTE Report as a measure under monitoring for USMCA-CUSMA implications.
The sovereign cloud commitment formalizes the very initiative the NTE already characterized as a procurement barrier. The online safety regime and AI model evaluation requirements sit squarely in USTR’s stated enforcement category of discrimination against US technology companies and digital goods. The legislation that would give these measures legal shelter has not been tabled. The strategy is an ambition, not yet a statute.
Canada’s lack of domestic policy development in areas under trade negotiation is precisely the Code Before Clause problem, described in “Code Before Clause Revisited“ (Clause and Effect, April 28, 2026) and “The Digital Hinge of Sovereignty“ (Clause and Effect, July 23, 2025): domestic institutional architecture must precede treaty invocation. The analysis in Locked In and Locked Out maps exactly how USMCA-CUSMA’s digital trade provisions constrain the sovereign cloud and platform regulation measures that the AI for All policy describes.
Canada published the plan. USTR is already reading it.
The investigation approaching
The pharmaceutical pricing and IP tracks: announced, not yet initiated. On February 20, 2026, the day the Supreme Court struck the IEEPA tariffs, Ambassador Greer told Reuters that new Section 301 investigations would cover pharmaceutical pricing practices, among other targets.14 For Canada, the target is specific. Canada’s Patented Medicine Prices Review Board implemented new drug pricing guidelines effective January 1, 2026, benchmarking Canadian patented drug prices against eleven comparator countries and excluding the United States from the reference basket.15 That exclusion is the precise dynamic the Trump administration’s Most Favoured Nation drug pricing executive order, issued May 12, 2025, is designed to reverse.16 A Section 301 investigation on pharmaceutical pricing would be Canada-specific in effect, even if opened as a multilateral action.
On intellectual property, Canada remained on the U.S. Watch List in USTR’s 2026 Special 301 Report, published April 30, 2026.17 Watch List status is the documented pre-investigation posture that has preceded every previous U.S. intellectual property enforcement action under Sec. 301. These two tracks have not yet been initiated. Section 301’s process requirements mean they cannot mature to the remedy stage before July 1. They will, however, be in the consultation and investigation phases during the USMCA-CUSMA Joint Review window. It’s clear that these IP and pharma issues are on the U.S. - Canada trade table.
The joint review table and the Sec. 301 table are not separate rooms. They are the same room.
What this means for July 1
My full paper, No Going Back, models the five scenarios Canada faces in the USMCA-CUSMA review and the economic cost of each. A different paper, The Exits Exist, discusses Canada’s strategic options that remain available if the pre-July actions are taken now rather than later. Both papers converge on the same point this piece makes concrete: the instrument through which an outcome is locked in matters as much as the outcome itself. A concession made inside a Sec 301 investigation, under tariff threat, produces a four-year renewable executive option. A concession offered proactively under the USMCA-CUSMA, in exchange for a treaty obligation, produces a durable, reciprocal commitment that binds all three parties symmetrically. Same subject matter. Different instrument. The difference is what Part Three of this series, “Settled Out of Congress,” examines in legal detail.
What this means for the USMCA-CUSMA Review, which may or may not begin on July 1, is straightforward.
The forced labour proceeding has a July 6 comment deadline: Canada can show up and argue the forum, or allow the unilateral track to advance unopposed.
The streaming investigation has a congressional bill filed and a CRTC decision that gave the bill’s sponsors everything they needed.
The pharmaceutical and IP tracks will be moving through the Section 301 pipeline during the Joint Review’s first months.
As I cataloged in “What Was Not in the Economic Update” (Clause and Effect, May 10, 2026), the pre-July actions Ottawa had not yet taken are exactly the ones that would close these vulnerabilities before they become the negotiating context.
The Joint Review does not open into a static legal environment. It opens into a running set of proceedings with active deadlines. Canada should know which proceedings are open, their deadlines, and what it intends to say in each.
Come on, Canada. There is time, but not much, to act. The pipeline is not theoretical. It is procedural. And the first deadline is July 6.
Prof. Barry Appleton is Managing Partner of Appleton & Associates International Lawyers LP, Co-Director of the Center for International Law at New York Law School, and Interim Director of the Balsillie Legal Advisory Centre at the Balsillie School of International Affairs. This is Part 2 of a three-part series. Part 1, “Reciprocal in Name Only,” was published on June 6, 2026. Part 3 of this series, “Settled Out of Congress,” publishes tomorrow. (June 8, 2026)
© 2026 Barry Appleton. All rights reserved.
Footnotes
Canada-United States-Mexico Agreement art. 34.7 (providing for a joint review on the sixth anniversary of entry into force, at which each party confirms whether it wishes the Agreement to continue).
Learning Resources, Inc. v. Trump, 607 U.S. ___ (2026) (decided Feb. 20, 2026) (holding that IEEPA does not authorize the President to impose tariffs); the legal implications for Section 301 as the successor enforcement authority are analyzed in Part 3 of this series, “Settled Out of Congress,” published Monday.
Initiation of Section 301 Investigations of Acts, Policies, and Practices of Various Economies Related to the Failure to Impose and Effectively Enforce a Prohibition on the Importation of Goods Produced with Forced Labor, 91 Fed. Reg. 12,884 (Mar. 17, 2026) (initiating sixty-economy investigation, including Canada, under Section 301(b) of the Trade Act of 1974).
Office of the U.S. Trade Representative, USTR Makes Findings and Proposes Action in 60 Section 301 Investigations Relating to Failures to Take Action on Trade in Forced Labor Goods (June 2026), (proposing additional duties of 10% for economies with a forced labour import prohibition, an Agreement on Reciprocal Trade commitment, or a partial regime, and 12.5% for all others; hearing requests due June 22, 2026; written comments due July 6, 2026).
Canada-United States-Mexico Agreement (USMCA-CUSMA) art. 23.6 (obligating each party to prohibit the importation of goods produced by forced or compulsory labour; Canada enacted implementing legislation following USMCA-CUSMA entry into force).
ArentFox Schiff LLP, New Tariffs to Replace IEEPA: USTR Initiates Sweeping Section 301 Investigations Targeting Excess Capacity and Failures on Forced Labor (Mar. 18, 2026) (summarizing USTR’s position that Mexico and Canada implemented forced labour import bans under USMCA-CUSMA obligations but few or no shipments have been detained); Office of the U.S. Trade Representative, 2026 National Trade Estimate Report on Foreign Trade Barriers (Mar. 31, 2026), Canada chapter (noting that Canada does not appear to be effectively enforcing its forced labour import prohibition).
Budget Implementation Act, 2026, No. 1 (March 2026) (formally repealing Canada’s Digital Services Tax with retroactive effect, as committed to in September 2025).
Dylan Moroses, USTR Seeking ‘Outcomes’ on DSTs, Stronger USMCA Rules, Law360 (Apr. 22, 2026) (reporting Ambassador Greer’s House Ways and Means Committee testimony that Section 301 actions against digital services taxes are drafted and standing ready, and that nine reciprocal trade agreements already contain commitments prohibiting such taxes).
Mary E. Lovely & Christine Y. Wan, US Reciprocal Trade Deals Built to Push America’s Trade Partners Away from China, Peterson Inst. for Int’l Econ., RealTime Economics (June 4, 2026), (documenting that all nine Agreements on Reciprocal Trade contain prohibitions on digital services taxes as core obligations).
Office of the U.S. Trade Representative, 2026 National Trade Estimate Report on Foreign Trade Barriers (Mar. 31, 2026), Canada chapter (identifying Canada’s Online Streaming Act, Online News Act, Shared Services Canada sovereign cloud RFI, Quebec’s Bill 109 discoverability requirements, and PMPRB pharmaceutical pricing practices as measures under monitoring for USMCA-CUSMA implications).
Rep. Lloyd Smucker, Protecting American Streaming and Innovation Act (Mar. 19, 2026), https://smucker.house.gov/media/press-releases/rep-smucker-introduces-protecting-american-streaming-and-innovation-act (directing USTR to initiate a Section 301 investigation into Canada’s Online Streaming Act within 30 days of enactment, with a 180-day compliance window and mandatory retaliation triggers).
CRTC, Broadcasting Regulatory Policy CRTC 2026-96 (May 21, 2026), https://crtc.gc.ca/eng/archive/2026/2026-96.htm (requiring large online streaming services with annual Canadian broadcasting revenues of $25 million or more to contribute 15 percent of those revenues to Canadian content funds, tripling the 5 percent base rate established in 2024 and currently subject to Federal Court challenge); CRTC Triples Streamers’ Financial Contributions to Canadian Content, Canadian Press (May 21, 2026) (noting U.S. Ambassador Pete Hoekstra called the decision discriminatory against American companies on May 24, 2026).
Prime Minister of Canada, Prime Minister Carney Launches AI for All: Canada’s New National Artificial Intelligence Strategy (June 4, 2026), (sovereignty pillar commits to sovereign compute and cloud infrastructure under Canadian governance, supported through government procurement; trust pillar commits to an online safety regime, privacy protections, and transparent evaluations of AI models by the Canadian AI Safety Institute).
Reuters, USTR Expects New Section 301 Probes to Cover Most Major Trading Partners (Feb. 20, 2026) (reporting Ambassador Greer’s statement that new Section 301 investigations would cover pharmaceutical pricing practices and discrimination against U.S. technology companies and digital goods and services).
Patented Medicine Prices Review Board, Guidelines for Excessive Pricing Proceedings (effective Jan. 1, 2026) (benchmarking Canadian patented drug prices against eleven comparator countries: Australia, Belgium, France, Germany, Italy, Japan, Netherlands, Norway, Spain, Sweden, and the United Kingdom, explicitly excluding the United States); Walking a Tightrope: Navigating US Most-Favored-Nation Prescription Drug Pricing in Canada, Lexology (Jan. 16, 2026).
Exec. Order No. 14297, Delivering Most-Favored-Nation Prescription Drug Pricing to American Patients, 90 Fed. Reg. ___ (May 12, 2025) (directing the Trade Representative to consider trade enforcement measures against countries whose pricing practices contribute to higher U.S. drug costs).
Office of the U.S. Trade Representative, 2026 Special 301 Report on the Adequacy and Effectiveness of U.S. Trading Partners’ Protection and Enforcement of Intellectual Property Rights (Apr. 30, 2026) (identifying Canada as a Watch List country), .