President-elect Donald Trump has threatened tariffs of 25% on imports from Canada and Mexico until fentanyl and undocumented migrants stop flowing over US borders. Canada says it has a plan to boost border security — and points to US government data that show most of the problems come from Mexico.

Canada is making preparations for an influx of immigrants if President-elect Donald Trump carries out his campaign promise of mass deportations. Canadian officials are planning to add patrols, buy new vehicles,

Arrests for illegal crossings from Canada spiked in the last fiscal year, but remain a fraction of the number of those from Mexico.