EXCLUSIVE — The United States is enjoying “unprecedented” cooperation from Canada and Mexico, according to a top homeland security official, as President Donald Trump threatens tariffs to crack down on the flow of fentanyl into the country.

Border Patrol Chief Mike Banks praised the decision by Mexican President Claudia Sheinbaum to surge thousands of troops south of the border in a Wednesday interview with the Washington Examiner. He said that action, coupled with commitments by Canada to step up its border enforcement, have formed the basis of an early partnership in Trump’s second term.