Canada's government on Monday proposed C$1.3 billion ($913.05 million) for border security after U.S. President-elect Donald Trump threatened tariffs unless Canada reduced the movement of migrants and drugs into the United States.

Canada has made its border increasingly secure. But enforcement is difficult on the world’s longest land border, and President-elect Donald Trump’s immigration rhetoric pressured Canada to invest in security or face tariffs.

Concrete blocks lining some parts of the world’s largest border stop vehicles from crossing, but people traveling by foot can just slip by, Canadian officials say