Should Canada be concerned about U.S. territorial ambitions?

Following the U.S. actions in Venezuela over the weekend, Adam Gordon, a visiting fellow with the Cascade Institute, says there is a real risk President Donald Trump will use military coercion against Canada. Gordon, who also served as senior legal and policy adviser to foreign affairs ministers Mélanie Joly and Anita Anand, says the country needs to be prepared and weighs in on Ottawa's response so far.