For anyone looking for signs that trade relations between Mexico and the United States are still going strong despite ongoing tariff tensions, there are two recent reasons for optimism.
The Mexican Postal Service (Correos de México) has resumed mail deliveries to the US for the first time since July. In an announcement on 12 September, the organisation said letters, postcards and administrative, legal or academic papers with no commercial value can now be accepted for delivery across the border.
Postal deliveries from Mexico to its northern neighbour had paused after the US ended the “de minimis” exemption that allowed packages worth less than US$800 to come into the US duty free. Several other countries, including Germany, the UK, Australia and Japan, also temporarily suspended postal services to the US as they waited for clarification on the new import duties.
Mexico still is not sending packages, courier shipments, magazines, books or any items with commercial value to the US, but Mexican officials have said discussions with US authorities are ongoing.
This progress on postal services comes as Mexico consolidates its position as the US’ top trading partner. According to data from the US Census Bureau, Mexican exports to the US rose to US$309.7bn in the first seven months of 2025, led by vehicles, auto parts, computers and medical devices. Imports from Canada and China fell during that same period, allowing Mexico to capture a 15.3% share of total US trade and pull ahead of both its main competitors.
As economic ties between the US and Mexico strengthen, relations between Mexico and China have become strained. Last week, Mexico announced a 50% tariff – more than double the previous levy – on 1,400 categories of products, including Chinese cars.
According to data released in August from Shanghai consultancy Automobility, Mexico bought more Chinese-made cars than any other country in the first half of this year.