Comment by aceofspades19

How are you going to blockade an almost 9000 km long border(with a huge variety of terrain) and a 243,000 km long coastline? The US can't even stop drugs and people coming through the 3,145 km border with Mexico. This argument also presumes that no Americans would smuggle supplies to Canada which seems unlikely to me because lots of Americans & Canadians are either related or friends.