> enforce travel bans (starting at 5 years) and issue large fines. This only affects future travel and is subject to court oversight. You cannot be refused e

> enforce travel bans (starting at 5 years) and issue large fines. This only affects future travel and is subject to court oversight. You cannot be refused entry as a US citizen. You can however find that just on the other side of the border you'll be sitting in a detention holding cell. > Failure to grant access to your digital device may result in the detention of that device under section 101 of the Customs Act, or seizure of the device under subsection 140 (1) of the Immigration and Refugee Protection Act. Yes, they have broad powers of search and seizure for anything physically in your possession when you cross the border. You MUST physically turn over the device, you have no legal recourse. You do not have to give them the password or unlock it for them (short of a court order compelling you to do so). They can absolutely just take your phone and laptop and essentially never give it back if it's considered evidence in an ongoing investigation. In practice, they generally return them when you are released, and if they hold them longer are required to return them within 30 days if it's not part of an ongoing investigation. If you are traveling internationally and want to protect your rights and your privacy, it's a good idea to have a lot of money so you can afford possible job loss due to detention, to pay for attorneys, and to buy new electronics if/when they are seized. This is kind of implied and somewhat explicitly said in my original comment.