I've a friend in need. His non b ran out due to not being renewed and he wants to do a border hop at Kan to get 30 days before flying to UK in 2 weeks. Will he need papers at the border regarding cancelling his work permit, or just leave and re-enter?
TLDR : Answer Summary
The friend needs to cancel his expired Non-B visa and the associated work permit before making a border run to obtain a 30-day Visa Exempt Entry. He cannot just leave; he should get a receipt for the cancellation as proof, though there might not be a need to show it at the border.