Cannabis becomes legal on October 17th, and with it will come issues with crossing the border.
In the US, cannabis is still illegal, and Len Saunders, a US-based immigration lawyer, says Border Guards will be asking travellers whether they have ever indulged, or worked with cannabis.
"Usually what happens is if it's something cannabis related, they'll just say 'have you ever used it?' 'Have you been involved with the industry?' And if you say yes you'll be taken you into secondary, you will be questioned extensively about either your use or involvement in the cannabis industry, even when it's legal in Canada, and you will be barred for life."
Saunders says not to admit anything, instead, just withdraw your application and don't answer any questions.
"Your best bet, if you're uncomfortable answering those questions, is to say nothing. Because if you say nothing the worst thing they can do is deny you entry, a simple denied entry for not co-operating. And I tell people that's what your rights are at the US border, you have the right to not answer that question."
He says at any point trying to enter the US, you have the right to withdraw your application, and return to Canada.
Border Patrol may try to interrogate you if you turn back, but you have the right not to answer the questions, and to instead try to cross the border at another time or location.