President Donald Trump said tariffs scheduled to hit Canada and Mexico next month were “on time” and “moving along very rapidly” following an initial delay, even as a US official cautioned the schedule could be less certain.

The 25% tariffs on goods from Canada and Mexico were paused on Feb. 3 for 30 days, and President Donald Trump said Monday they are “on time” for implementation next month.

President Donald Trump says his tariffs on Canada and Mexico are starting next month. The comment Monday indicates the end of a monthlong suspension on planned import taxes that could potentially hurt growth and worsen inflation.

President Donald Trump, asked on Monday whether tariffs would be placed on Canadian and Mexican goods when the deadline for a pause on such action arrives next week, reiterated his view that the United States had been mistreated by its neighbors and allies.

President Donald Trump said sweeping tariffs on Canada and Mexico "will go forward" when a month-long delay on their implementation expires next week.

Canada and Mexico are expected to intensify efforts this week to avoid punishing 25% tariffs on their exports to the U.S. in talks to persuade President Donald Trump's administration that their steps to increase border security and curb fentanyl trafficking are working ahead of a March 4 deadline.

One human smuggler who spoke to NBC News said the Mexican troops wouldn’t make a difference, but conceded stricter border policies had significantly cut into his business.

The leaders of Mexico and Canada have been willing to appease U.S. President Donald Trump to avoid tariffs on their products.