The false tweet by Fox News was deleted following a strongly-worded statement from Prime Minister Trudeau who accused the news network of dishonouring the victims of the Quebec City shooting.
"It's a terrible reminder of why we must remain vigilant. And why the president is taking steps to be proactive, not reactive," said White House press secretary Sean Spicer on Monday.
Experts say the real cost of raising, shielding or evacuating vulnerable spots, which include mass−transit systems, power plants and sewage plants, could be very high.
Permanent residents must present valid identification that proves their status in Canada, said Immigration Minister Ahmed Hussen, and dual citizens should travel with their Canadian passport.
The University of British Columbia and the University of Montreal pulled ads in recent weeks after they became aware that their promotional material was appearing on the site.
U.S. President Donald Trump's decision to ban U.S.-funded groups from discussing abortion will cause thousands of women to die from unsafe abortions, activists say.
Resolute has strongly denied any wrongdoing and some northern Ontario communities, which stand to lose jobs and industry, have denounced Greenpeace’s tactics.
The person with knowledge of Trump’s decisions insisted on anonymity because that person was not authorized to confirm the moves ahead of a formal announcement.