Canada's Trudeau vows action after four freeze to death in 'mind blowing' tragedy

FILE PHOTO: A sign post for the small border town of Emerson, near the Canada-U.S border crossing in Emerson, Manitoba, Canada, February 1, 2017. REUTERS/Lyle Stafford

OTTAWA (Reuters) -Canada is doing all it can stop people smuggling across the U.S. border after a family of four froze to death in a "mind blowing' tragedy, Prime Minister Justin Trudeau said on Friday.

U.S. authorities have charged a U.S. man with human trafficking after the four - a man, woman, baby and teenager - were found dead in the province of Manitoba, a few yards north of the frontier with Minnesota.