Roni the Raccoon, the 1980 Winter Olympics (Lake Placid) mascot
A borscht jar. Borscht is a sour soup made with beetroots that originated in Eastern Europe. The mascot references the "Borscht Belt," which consisted of parts of Orange, Sullivan, and Ulster counties in New York. The Borscht Belt was a popular vacation spot for Jewish families during the 1920s through the 1970s.
Groups of people protested this episode due to the satire of upstate New York and making fun of Newfoundlanders with that Canadian Ralph Wiggum wearing a seal pup hat.
Homer shouldn't be allowed in Canada as he was banned from the country in "Midnight Rx".
In Canada, free universal healthcare is only available to people who are either Canadian citizens or permanent residents. As Lisa Simpson is neither, she would not qualify for free healthcare in Canada, and will need to pay a hefty medical bill for her hospital stay.