Mexico Under Sheinbaum: Year One and the T-MEC Cliff

Year one inheritance and the Plan Mexico pivot #

Sheinbaum inherited headline growth of 3.2 percent in 2023 and 1.5 percent in 2024 per INEGI, alongside the most stretched fiscal position in three decades. The 2024 public sector borrowing requirement landed at 5.9 percent of GDP, driven by accelerated Tren Maya and Dos Bocas spending and capitalization transfers to Pemex that SHCP recorded above the line. The November 2024 budget projected consolidation to 3.9 percent of GDP for 2025, a 200 basis point compression that requires revenue surprises or expenditure restraint not visible in the underlying line items.

Plan Mexico, unveiled by Sheinbaum and Economy Secretary Marcelo Ebrard in January 2025, replaced the AMLO rhetoric of austerity republicanism with an explicit industrial agenda. The plan sets 2030 targets: lift manufacturing from 21 to 25 percent of GDP, raise national content of strategic exports from 50 to 65 percent, and channel investment into 14 designated industrial corridors along the northern border and the Isthmus of Tehuantepec. Financing leans on Banobras, Nafin, and Bancomext rather than direct fiscal outlays, which preserves the headline deficit but transfers contingent liabilities into the development bank perimeter. Sheinbaum has retained the AMLO commitment to Pemex and CFE as state champions and has not reopened private exploration, but Ebrard has reopened working channels with USTR and the Canadian Department of Finance that effectively froze in 2023 and 2024.

The 2026 T-MEC review: corn, autos, and Article 34.7 #

The treaty review is scheduled for July 1, 2026 under Article 34.7 of the United States Mexico Canada Agreement, known in Spanish as T-MEC. The mechanism is a joint review at year six of the agreement's sixteen year term: each party confirms continuation in writing, and the absence of a confirmation triggers annual reviews until the agreement is reaffirmed or terminates at year sixteen. The review is not a renegotiation in form, but functions as one because each capital arrives with leverage points it wants resolved before signing the affirmation.

Three Mexican vulnerabilities define the negotiation. The first is the genetically modified corn dispute, in which a USMCA panel ruled in December 2024 that Mexico's 2023 decree restricting GM corn for human consumption violated the agreement's sanitary and phytosanitary provisions. Sheinbaum repealed the decree in February 2025, but Mexican constitutional reforms passed in March 2024 still embed a precautionary GM standard, which Washington reads as a renewed dispute risk. The second is automotive rules of origin under USMCA Article 4.2 and the 75 percent regional value content threshold for vehicles, where the second Trump administration has signaled it intends to revisit the core parts and steel-aluminum interpretation that Mexico won at panel in 2023. The third is agave and dairy: tequila and mezcal geographical indications matched against US dairy market access concerns that Canada has dragged into trilateral negotiations through the Class 7 milk pricing structure.

The base case is that all three parties affirm continuation in July 2026 with side letters rather than treaty amendments. The downside case is a Washington decision to withhold affirmation as leverage on migration and fentanyl enforcement, which would convert the agreement into an annual review cycle and reprice Mexican manufacturing FDI immediately. Banxico's April 2026 quarterly report flagged this as the dominant tail risk for 2026 GDP, estimating an annual review path would shave 80 to 120 basis points off growth versus a clean affirmation.

Pemex, CFE, and the energy balance sheet #

Pemex closed 2025 with financial debt of 97.6 billion dollars, the largest oil company debt stack in the world by an order of magnitude, against EBITDA of 22.4 billion dollars on Brent equivalent realizations of 71 dollars per barrel. The 2026 maturity wall is roughly 9.8 billion dollars, which SHCP has confirmed it will support through direct transfers or a contingent guarantee structure under negotiation with the Inter-American Development Bank and Banobras. Sheinbaum's energy team, led by Secretary Luz Elena Gonzalez, has formalized what AMLO did informally: Pemex is fiscally consolidated with the sovereign for credit risk purposes, and rating agencies now treat the firm on a one notch differential rather than two.

Pemex production has stabilized at 1.78 million barrels per day after a decade of decline, lifted by Zama, Trion, and Ixachi. The Olmeca refinery at Dos Bocas, AMLO's flagship, processed 156,000 barrels per day in Q1 2026 against nameplate of 340,000, and SENER concedes commissioning will run into 2027. Sheinbaum has restructured Pemex into a clearer upstream and downstream split for management accounting, which allows the government to ringfence refining losses and present a more credible upstream case. CFE is the better story: renewable capacity reached 22.1 gigawatts in 2025 per CENACE against the Plan Mexico target of 35 gigawatts by 2030, with a 2026 tender pipeline of 6.2 gigawatts in Sonora, Coahuila, and Yucatan. The bottleneck is transmission: CENACE catalogued 38 transmission and substation projects whose 2024 budgets were underfunded by 3.1 billion dollars.

Banxico independence and the policy rate path #

Banxico cut the overnight TIIE target rate from 10.50 percent at end-2024 to 8.50 percent by April 2026 in seven 25 basis point reductions, with one pause in August 2025 when peso volatility spiked around tariff threats. The cuts trailed the Federal Reserve, leaving the rate differential against the federal funds upper bound at 425 basis points, a cushion for portfolio capital that historically tightens when the differential compresses below 300 basis points.

The institutional question through 2025 was whether the Morena two-thirds Senate would use its supermajority to revisit Banxico's autonomy, enshrined in Article 28 of the constitution. Sheinbaum committed publicly in October 2024 and again in January 2026 that autonomy is non-negotiable, and the governing board nominations she has submitted, including Jonathan Heath as deputy governor for monetary research in December 2025, were technical economists rather than political appointees. The 10 year Mbono yield narrowed to a 9.6 to 9.9 percent range in Q1 2026 against a peak of 10.9 percent in mid-2024. The peso traded a 17.0 to 20.4 range against the dollar through the year ending March 2026, with the strong end set in May 2025 on nearshoring narratives and the weak end in February 2026 around investigation thresholds on Mexican steel, autos, and agricultural imports. Implied one month volatility on USDMXN averaged 12.8 percent in 2025 against 9.4 percent in 2023.

Judicial reform fallout and the rule-of-law premium #

The September 2024 judicial reform, passed in AMLO's final weeks and ratified under Sheinbaum, replaced appointment-based selection with popular election for federal judges including Supreme Court ministers, district judges, and magistrates. The first round was held on June 1, 2025, organized by the Instituto Nacional Electoral, with roughly 880 federal judicial positions on the ballot. Turnout was 13 percent, far below the 60 percent floor at general elections, and the candidate selection process was criticized for partisan tilting in the screening committees.

The economic transmission runs through three channels. JP Morgan's EMBI Mexico spread widened from 295 basis points in mid-2024 to 380 basis points after the reform passed, settling at 340 basis points by April 2026, a 45 basis point premium worth roughly 3.2 billion dollars of additional annual sovereign interest at current debt stocks. FDI composition shifted toward reinvested earnings rather than new equity, consistent with multinationals deferring greenfield commitments. USMCA Chapter 14 investor-state arbitration filings reached 17 active cases in early 2026, the highest count since entry into force. Sheinbaum has not reversed the reform, but a March 2026 draft of the Organic Law of the Federal Judiciary would restore tenure protections for elected judges and tighten qualification standards for the 2027 second tranche. Whether the softening compresses the spread will be visible after the expected June 2026 vote.

Nearshoring delivery, water, and security #

Banxico recorded 36.9 billion dollars of FDI inflows in 2024 and 39.4 billion in 2025, the latter a nominal record but dominated by reinvested earnings and intracompany loans. New equity fell to 12.1 billion dollars in 2025 from 15.8 billion in 2022, the relevant pre-nearshoring-narrative baseline. BMW's 800 million dollar expansion at San Luis Potosi for EV assembly broke ground in June 2024 and is on track for first production in 2027. Tesla's announced one billion dollar Gigafactory at Santa Catarina, Nuevo Leon, declared by AMLO and Elon Musk in March 2023, has been paused since early 2024 with no construction beyond site preparation. German, Korean, and Japanese commitments have advanced on schedule while US-headquartered commitments have delayed or downsized under USMCA review uncertainty.

Two non-policy constraints bind the industrial map. The Cutzamala system that supplies 25 percent of Mexico City's potable water held at 38 percent of capacity in March 2026 after dropping below 30 percent in 2024. CONAGUA's 2025 stress maps classify Nuevo Leon, Coahuila, and Aguascalientes as high stress for industrial water allocation, and several semiconductor and battery projects in the northern corridor have downsized water-intensive process steps or relocated. INEGI recorded 33,287 intentional homicides in 2024 and a preliminary 32,100 in 2025, a marginal decline but well above the 25,000 floor the federal government targeted. Fentanyl precursor seizures rose sharply in 2025 under bilateral pressure, but the homicide geography has shifted toward Sinaloa and Guanajuato in patterns associated with cartel fragmentation rather than reduced violence.

2026 fiscal arithmetic and what to watch #

The 2026 federal budget approved by Congress in November 2025 sets the public sector borrowing requirement at 3.5 percent of GDP, a further 40 basis point compression versus the 2025 outturn of 3.9 percent. The arithmetic depends on three optimistic assumptions: oil revenue at a Mexican mix realization of 67 dollars per barrel against a forward curve closer to 62, GDP growth at 2.0 percent against IMF Article IV staff at 1.4 percent, and a peso averaging 19.5 against a forward implied 20.1. Each of these, if it lands at staff consensus rather than budget, opens roughly 0.4 percent of GDP in additional financing need.

The expenditure side carries its own pressures. IMSS-Bienestar, the universal primary care program absorbed under Sheinbaum, requires roughly 0.3 percent of GDP in additional outlays in 2026. Pension for Wellbeing, indexed to minimum wage growth that has run above CPI for six consecutive years, adds 0.2 percent of GDP. Tren Maya operations are now forecast by SHCP's internal modeling to require an annual subsidy of 0.1 to 0.2 percent of GDP through 2028. The cumulative pressure of 0.6 to 0.7 percent of GDP is what makes the 3.5 percent target stretched rather than realistic at the underlying revenue assumptions.

The 2026 risk pricing is asymmetric. The upside case requires a clean T-MEC affirmation in July, judicial reform implementing law that visibly moderates rule-of-law concerns, oil prices at or above budget, and a peso that holds the stronger half of its 2025 range. The downside case requires only one of those four to fail. A withheld T-MEC affirmation would compress the FDI pipeline, widen Mbono spreads, and push the deficit toward 4.5 percent of GDP, a level at which S&P, Fitch, and Moody's have signaled they would move to active downgrade rather than negative outlook. Banxico would then be forced to choose between defending the peso and supporting growth, with independence preserved but policy space narrowed. The single most important date for the year is July 1, 2026, when the United States must transmit its Article 34.7 affirmation or trigger the annual review path.

Sources #

• Quarterly Inflation Report and Monetary Policy Statement, Q1 2026
• Sistema de Cuentas Nacionales and Estadisticas de Comercio Exterior 2025
• Paquete Economico 2026 and Pre-Criterios Generales de Politica Economica
• Pemex Form 20-F Annual Report 2025 and Q1 2026 Investor Presentation
• Mexico 2026 Article IV Consultation Staff Report
• Mexico Country Economic Memorandum 2026
• OECD Economic Surveys: Mexico 2026
• Mexico Sovereign Rating Action and Outlook Revision, March 2026
• Fitch Ratings Mexico Sovereign Review and Pemex Issuer Default Rating, February 2026
• Mexico Macro and FX Strategy Weekly, April 2026