WASHINGTON—Canada and Mexico are expected to intensify efforts this week to avoid 25 percent tariffs on their exports to the United States in talks to persuade the Trump administration that their steps to increase border security and curb fentanyl trafficking are working ahead of a March 4 deadline.
Canada and Mexico have both taken steps to beef up border security, which bought them about a month’s reprieve from the tariffs that could wreak havoc on a highly integrated North American economy.
