Pardons are supposed to let a former offender move on. So why do they sometimes create more problems than they solve at the U.S. border?

Canadians bought $85 million worth of legal weed in May, $11 million more than in April, according to Statistics Canada data.

Mark pleaded guilty to marijuana possession in 1982 at age 18. Thirty-seven years later, U.S. border officials confronted him about the arrest, banning him from the U.S. for life.

New Brunswickers are less than half as likely to use credit cards to buy cannabis compared to alcohol. Why? Uneasiness about the U.S. border, one expert says.

In some provinces, marijuana sales will be online only to start. But that raises an awkward question — what will happen to all that credit card data south of the border?