Mexico’s growing fleet of Chinese-made heavy trucks is becoming a new obstacle in its quest for relief from US tariffs, as Washington presses for assurances that its southern neighbor isn’t becoming a backdoor for Chinese manufacturers to enter North America.

Mexico’s growing fleet of Chinese-made heavy trucks is becoming a new obstacle in its quest for relief from US tariffs, as Washington presses for assurances that its southern neighbor isn’t becoming a backdoor for Chinese manufacturers to enter North America.