The Andean Crack: How Trump's Tariff Architecture Is Redrawing South America's Bloc Alignments
On 5 April 2026, the Trump administration's reciprocal tariff schedule came into effect across the Americas, applying a baseline 10 percent duty to goods from Peru, Ecuador and Bolivia — Andean Community of Nations (CAN) members without bilateral free-trade-adjacent exclusions — while Colombia, covered by the 2012 US-Colombia Trade Promotion Agreement, received a narrower set of sectoral surcharges rather than the blanket baseline. Chile, covered by its own 2004 FTA, was similarly ring-fenced. The asymmetry was not accidental. It was architecturally deliberate: a tariff regime that punishes CAN members without bilateral agreements while rewarding those who signed on to Washington's preferred trade template, driving a wedge into the one Latin American sub-regional bloc that had, since 2011, maintained at least formal solidarity on trade and development questions.
That wedge has now hit bone. Lima announced on 10 April that it would accelerate negotiations for an "enhanced cooperation framework" with Washington to recover tariff parity. Quito, whose dollarised economy makes it acutely sensitive to export revenue, signalled similar interest the following week. Bolivia and Colombia — the former because it has no such FTA and the latter because it is choosing the CELAC flank on Cuba and Venezuela — are moving in the opposite direction. The Andean Community, which operates by consensus and has no enforcement mechanism, is paralysed. CELAC — the Community of Latin American and Caribbean States, which explicitly excludes the US and Canada — is watching.
The dynamic playing out here has a long Latin American pedigree. Peripheral commodity exporters are structurally trapped by terms of trade that deteriorate over time relative to manufactured imports from the core — a pattern the ECLAC economists identified in the 1950s and that the reciprocal tariff regime now makes acute. Andean exporters must choose between accepting deteriorating terms of access to the US market or pivoting to alternate buyers — China, the EU, regional partners — who offer different terms but may not absorb the same volumes.
What the Tariff Asymmetry Does to CAN
The Andean Community of Nations is a customs union in legal form and a preference agreement in practice. Its members — Bolivia, Colombia, Ecuador and Peru — share a common external tariff schedule on many goods but maintain separate bilateral trade agreements with non-member countries. This internal incoherence has always been the CAN's structural weakness; the new US tariff architecture exploits it directly.
Peru's exposure is the most acute. Asparagus, avocado, blueberries and copper concentrates together account for roughly 35 percent of Peruvian export revenue, and the US absorbs about 15 percent of Peruvian exports by value — a share that peaks for agricultural goods. A 10 percent tariff on Peruvian blueberries entering the US does not simply reduce Peruvian blueberry revenue. It restructures the entire value chain: exporters reprice to absorb partial tariff costs, US importers search for Chilean or Mexican substitutes (which carry lower duties), and Peruvian growers face the choice of accepting margin compression or shifting acreage to other crops or buyers. The structural adjustment that follows is multi-year, not quarterly.
Ecuador's position is more complex because its dollarisation — the economy has used the US dollar as legal tender since 2000 — gives it no exchange-rate cushion. When Peruvian exporters face US tariffs, the sol depreciates modestly against the dollar, offering some partial offset. Ecuador's exporters get no such buffer. The tariff falls on shrimp, bananas and cut flowers with full nominal force. President Noboa's economic team in Quito has characterised the April tariffs as "incompatible with Ecuador's structural integration into the dollar zone" — language that is both economically precise and politically toxic in Washington, where it reads as ingratitude from a government that has received substantial US security assistance for its anti-cartel operations.
Bolivia's situation is different again. Its export basket — lithium, zinc, tin, natural gas and soy — goes primarily to Brazil, Argentina and China rather than the US. The direct tariff impact is marginal. But the CAN institutional fallout matters enormously for La Paz: if Peru and Ecuador defect to a bilateral-adjacent Washington framework, Bolivia loses the bloc leverage it uses in MERCOSUR accession negotiations and in CELAC coordination. For the Arce government, the CAN's fragmentation is a strategic loss even if the tariff hit is small.
Colombia's Counter-Move and the CELAC Geometry
Colombia is the outlier that reveals the stakes most clearly. Petro's government has the tariff protection of the FTA, so the April 5 schedule did not hit Colombian exports at the baseline. That insulation should, by conventional logic, create Colombian incentives to stay quiet and pocket the differential advantage. Instead, Bogotá has moved in the opposite direction: issuing joint statements with Brazil and Mexico on Cuba (18 April), pursuing coordination with CELAC's secretariat on a bloc-wide tariff response framework, and using its protected FTA status as diplomatic cover to take positions on Venezuela and migration that countries without that protection cannot afford.
This is rational strategy, not idealism. Petro calculates — probably correctly — that the tariff regime's long-term damage to Andean cohesion hurts Colombia too, by degrading the regional architecture through which Bogotá exercises influence. A fractured CAN, with Peru and Ecuador in bilateral accommodation with Washington and Bolivia isolated, leaves Colombia as a medium power without a functioning bloc, dependent on its FTA relationship with a US administration that has repeatedly threatened to revisit that agreement over narcotics certification disputes.
The CELAC frame is the alternative architecture. CELAC's April 2026 extraordinary summit — called by the pro-tempore presidency rotating through Honduras — issued a joint declaration on 14 April opposing "unilateral coercive measures that affect the sovereignty and development capacity of member states." It did not name tariffs explicitly. It did not have to. Every government in the room understood that the statement was directed at both the US tariff regime and the Venezuela-Cuba sanctions architecture.
CELAC's declaration is not a rejection of trade. It is an assertion that trade terms must be set through multilateral frameworks rather than unilateral US executive orders — negotiation from the exteriority of Latin American historical experience, not passive acceptance of terms set in Washington.
The Chinese Flank and What Lima Knows
Behind Lima's bilateral accommodation signal with Washington is a calculation that the wire desks are not examining carefully enough: Peru is simultaneously the country most exposed to US tariff pressure on its agricultural exports and the country with the deepest Chinese port infrastructure investment in South America. The Chancay megaport — a $3.6 billion Cosco Shipping investment inaugurated in November 2024 and now processing its first full year of commercial volume — gives Peru direct Pacific shipping connectivity to Shanghai that bypasses the Panama Canal.
What Chancay means for the tariff moment is this: Lima is not choosing between Washington and Beijing. It is choosing the bilateral accommodation with Washington for its agricultural exporters while the Chinese infrastructure investment builds the alternative throughput capacity for its mining sector. Copper concentrates — Peru is the world's second-largest copper producer — go predominantly to Chinese smelters regardless of US tariff schedules, because the US does not have the smelting capacity to absorb them. The tariff architecture cannot reach that portion of Peru's export economy. Lima's "enhanced cooperation framework" negotiations with Washington are therefore a hedge on the agricultural revenue stream, not a strategic pivot away from the Chancay infrastructure logic.
What this illustrates is a pattern common across the Global South: sovereign states making apparently free bilateral choices that are in fact structured by the prior decisions of transnational capital — in this case, by Chinese port infrastructure spending that has already reordered Peru's commodity logistics regardless of Lima's stated geopolitical preferences.
Stakes: Who Controls the Andean Future
The bloc fragmentation that the Trump tariff architecture is accelerating will not be easily reversed. Free trade agreements, once signed in the CAN's bilateral accommodation mode, create domestic constituencies — export agricultural lobbies, mining companies, ports — whose interests align with maintaining the agreement even when its strategic cost becomes apparent. The political economy of accommodation is sticky.
What CELAC can offer — and is beginning to articulate through the Honduras pro-tempore language — is a framework for collective tariff negotiation: the idea that Latin American and Caribbean states should coordinate their responses to unilateral US trade measures rather than each bilaterally accommodating on terms the US dictates. This is economically sensible and politically very difficult. The MERCOSUR-EU agreement — seven years in negotiation, still not ratified — shows how hard coordinated bloc trade strategy is when individual member interests diverge.
The Andean crack is real. Whether it becomes a break depends on how far Lima and Quito go in their bilateral accommodation negotiations, whether Bogotá and La Paz can sustain a CELAC coordination framework without Lima's participation, and whether the Chinese infrastructure logic — which runs through Lima regardless of its political choices — eventually creates an alignment of material interest that overrides the institutional fragmentation.
The wire consensus is that Latin America is responding to Trump's tariffs with "pragmatic accommodation." The honest reading is that a bloc is fracturing in real time, with the fracture lines running exactly where Washington designed them to run.
Monexus flagged the Chancay-accommodation tension three weeks before the Financial Times noticed Peru's dual-track positioning — because we read the port infrastructure logic, not just the tariff schedule.