Canadians who visit the US for more than 30 days will be required to register with authorities and have their fingerprints taken, as the Trump administration tightens migration rules amid soaring tensions between the North American neighbors.

The new requirement, effective from 11 April, will harden enforcement of an existing law, which states that all foreign nationals 14 years old or older who plan to stay in the US for 30 days or more must register with the authorities.

In practice, that rule has not been applied consistently to Canadians entering the United States across the 5,525-mile land border between the two countries.