Excerpt from this article:
New Democrat MP Nathan Cullen asked if that means no Canadian should cross the border with a phone, laptop or tablet unless they have “great comfort” with a U.S. border official inspecting the contents.
“Yes, as a matter of law,” Therrien said, though he acknowledged officers would not have time to inspect everyone’s devices, given the huge numbers of people that cross the border daily.
Therrien agreed with Cullen’s suggestion that nothing in law could prevent U.S. border officials from peeking at a senior Canadian official’s “playbook” on a trade negotiation.
Cullen said one of his constituents was denied entry to the U.S. on health-related grounds because information on the person’s phone indicated a prescription for heart medication.