Which former Vice President are you talking about? Ford, Bush, or someone even further back???
I'm not surprised that the U.S. is doing this. Our customs and border policies have been a national disgrace since before our former vice president began running the country. After visiting Canada monthly last year, it was a surprise to learn this about a country I'd come to know and love. I'm sure that retaliation and an attempt of pressure the U.S. into a more reasonable attitude is a factor. It just doesn't square with the practical attitudes that made building a boat in Canada and spending time there such a pleasure.
I think the take home lesson for sailors on both sides of the border is not to cross a large body of water to the other nation without enough fuel, supplies, and endurance to turn around and go right back again. The border issues have become so nutty that clearance can not longer be considered a given.