Canada vows to keep border open

Influx of migrants presents a political risk for Prime Minister Justin Trudeau

TORONTO - Canada will not tighten its border to deter migrants crossing illegally from the United States in the wake of a US immigration crackdown because the numbers are not big enough to cause alarm, a government minister said.

Public Safety Minister Ralph Goodale said the issue had not risen to a scale that required hindering the flow of goods and people moving across the world's longest undefended border.