# FreightSpot blog > Analysis and practical guides on international freight and Mexican trade. Source: https://www.freightspot.com/en/blog · Publisher: FreightSpot - [When Your Cargo Misses the Boat: The Impact of Blank Sailings](https://www.freightspot.com/en/blog/blank-sailings-fletes-maritimos.md) (2026-08-08): When a carrier cancels a departure or skips a port, the problem isn’t just a lost week: ETAs, inventory, bookings and local charges all move. Here’s how to read blank sailings before they hit your operation. - [The MVE Extension to September 30: What Changed and What to Prepare (August 2026)](https://www.freightspot.com/en/blog/nueva-prorroga-manifestacion-valor-electronica-2026.md) (2026-08-01): The August 2026 extension moved the relief to September 30; another one followed. What changed then, what to prepare, and the calendar now in force through January 15, 2027. - [The 90-Day US–Mexico Tariff Truce: What Changed, What Didn’t, and How to Use the Clock](https://www.freightspot.com/en/blog/pausa-arancelaria-90-dias-mexico-eu-agosto-2026.md) (2026-07-31): The US paused its 30% tariff on Mexico for 90 days. Which tariffs stayed, what USMCA still shields, and how to re-cost your operation during the truce. - [The Manzanillo Meltdown: 19 Hours Without Trucks, a 63-km Queue, and the Lessons You Can Actually Control](https://www.freightspot.com/en/blog/colapso-puerto-manzanillo-julio-2026-lecciones.md) (2026-07-31): A storm knocked out customs systems and cranes at Mexico’s busiest container port. The chronicle of the 19-hour shutdown — and the resilience plan. - [Mexico’s Electronic Value Declaration Was Set to Become Mandatory August 1: What Changes in Your Clearance, and the Extensions That Followed](https://www.freightspot.com/en/blog/manifestacion-valor-electronica-obligatoria-agosto-2026.md) (2026-07-31): How Mexico’s electronic value declaration works, who files it and what it requires. From July 2026; the MVE now phases in by regime through Jan 15, 2027. - [Ocean Freight Logs Two Straight Weekly Drops: How to Negotiate Your Rate with the Index in Hand](https://www.freightspot.com/en/blog/fletes-maritimos-baja-drewry-julio-2026-negociar.md) (2026-07-31): Drewry’s index logged a second straight weekly drop. What is pushing ocean rates, what it means for Mexico lanes, and how to negotiate with the index in hand. - [Air Freight Isn’t Getting Cheaper: When Flying Your Cargo Pays Off (and When It’s Burning Money)](https://www.freightspot.com/en/blog/flete-aereo-firme-2026-cuando-conviene-volar.md) (2026-07-31): Air rates are holding firm into 2026. How to choose between air and ocean on value per kilo, real urgency and total cost — instead of by reflex. - [Mexico’s 2026 TIGIE Tariffs: How to Know Exactly What Your Next Import Will Pay](https://www.freightspot.com/en/blog/tasas-tigie-2026-calcula-impuestos-importacion.md) (2026-07-22): Tariffs changed, and quoting “at the usual rate” is now the fastest way to lose margin. This is the route to knowing your real cost before you ship — and calculating it for free in minutes. - [Demurrage and Detention: The Practical Guide to Stop Overpaying](https://www.freightspot.com/en/blog/demurrage-detention-almacenajes-guia-para-no-pagar-de-mas.md) (2026-07-10): The most avoidable charges in the entire supply chain — and among the most margin-destroying. What they are, why they happen, and the six tactics we use so our clients almost never pay them. - [How to Cut Customs Costs in Mexico: 7 Levers That Actually Work for Importers in 2026](https://www.freightspot.com/en/blog/como-reducir-costos-aduanales-importacion-mexico-2026.md) (2026-06-04): Most import overspend hides in classification, origin claims and paperwork — not in your freight rate. Seven levers that pay back shipment after shipment. - [USMCA for SMBs: 7 Moves to Capture the Benefit Without Costly Mistakes](https://www.freightspot.com/en/blog/tmec-pymes-7-acciones-aprovechar-usmca-sin-errores-costosos.md) (2026-04-28): USMCA is not a corporate-only perk. Seven disciplined moves that let a smaller importer or exporter claim the benefit without the costly paperwork mistakes. - [The 2026 USMCA Review: What Could Change and How to Get Ready](https://www.freightspot.com/en/blog/revision-tmec-2026-que-cambia-como-prepararse.md) (2026-04-18): The 2026 USMCA joint review: what is on the table — rules of origin, labor, energy, non-regional inputs — and how to get ready early. - [AI at the Border: How Artificial Intelligence Is Transforming Trade Into Mexico](https://www.freightspot.com/en/blog/inteligencia-artificial-aduanas-comercio-exterior-mexico-2026.md) (2026-04-14): AI already classifies goods, predicts clearance times and catches document errors. What that changes for importers into Mexico, smaller ones included. - [Section 232: How the April 2 Proclamation Redraws Tariffs on Steel, Aluminum, and Copper](https://www.freightspot.com/en/blog/seccion-232-aranceles-abril-2026-proclamacion.md) (2026-04-11): Section 232 duties now hit the full customs value of derivative steel, aluminum and copper goods, not the metal content. What it changes for exporters. - [War in Iran: How the Conflict Is Driving Up Freight Costs in Mexico](https://www.freightspot.com/en/blog/guerra-iran-impacto-logistica-mexico-2026.md) (2026-04-08): The conflict in the Strait of Hormuz has triggered the largest oil-supply disruption in history. Here’s the real impact on freight rates, diesel, and cross-border trade in Mexico.