- Barack Obama's description of Kyle as a "kid who made a buzz in the social media this week" was a reference to a Muslim Sudanese-descent American kid Ahmad, who was arrested that same week for bringing a clock he made by himself to school and was mistaken for a bomb.
- The plot is a reference to 2016 Presidential candidate Donald Trump's announcement that he'll build a wall over the U.S.-Mexican border should he become President. The Canadian President is modeled after Trump, and Garrison's plan to get rid of the Canadians is a reference to the then ongoing immigration debates.
- Both Garrison and the Canadian boy are both right about Rome's fall. It was a variety of issues, the Goths included, that drove the Roman Empire into ruin and ultimately crumbled.
References to Popular Culture
- Chuck Mangione is a popular Jazz musician known for playing the song "Feels So Good".
- Caitlyn Jenner saying "Buckle up, Buckaroo" to Kyle is referencing the popular catchphrase "Buckle Up, Buttercup".
- Caitlyn Jenner appears. Every time she drives away, she runs somebody over, a reference to the car accident she was involved in in February 2015 (when she was still known as Bruce).
- Canadians moving to the US due to having no other option is a reference to the European migrant crisis.
- The Canadian president is dancing to the song "The Safety Dance" by Men Without Hats.
- Many of the fictional Canadian customs performed in this episode, such as them performing "Feels so Good" by Chuck Mangione on trumpet while the east at 8 AM, references the custom of Muslims to pray five times a day towards Mecca, Saudi Arabia in the East.
- The subplot of Butters and Charlotte is meant to be a reference to the film The Lion King II: Simba's Pride, which in turn is based upon Romeo and Juliet written by William Shakespeare.
- Canadian cuisine:
- Poutine (fries, cheese and gravy)
- Tourtière (a meat pie)
- salami, and some green stuff
- After interrupting the Canadian students presentation on the culture of Canada, Mr. Garrison sarcastically refers to himself as former CBS Evening News anchor, Dan Rather.
- When Cartman helps Butters to find a Canadian girl to talk to, he mentions that one of them looks like singer Alanis Morissette.
- The Canadian girl that Cartman says looks like Alanis is wearing the same beanie, scarf, jacket and gloves that the singer wore in the music video for her single, "Ironic".
- Cartman did not keep his promise from "Stunning and Brave" to stop ridiculing Kyle's ethnicity and religion. Throughout this episode he accused Kyle and his people of being in a conspiracy plot to ruin the USA with immigrant Canadians.
- Like the previous season, the current season uses recurring storylines.
- This is the first episode to focus on Mr. Garrison, since "Eek, A Penis!"
- Many Canadian background characters are shown as Canadian immigrants.
- Kyle gets merited for his speech about Caitlyn Jenner in the previous episode.
- PC Principal is still principal at South Park Elementary and will remain principal for the rest of the season, as well as in the next season also.
- This is the second time Mr. Garrison is fired, the first time being "Cherokee Hair Tampons".
- This is the second time the song "The Safety Dance" has been used. The first time was at the teen hangout in "Asspen".
- "Hot Cosby", a phrase briefly mentioned at the beginning of the previous episode "Stunning and Brave", which stands for rape, is said several times by the boys in this episode.
- Several characters from previous episodes make cameo appearances in Mr. Stkrdknmibalz's language class including:
- They portray Canada as having a President, however, in reality, Canada has a Prime Minister.
- When Kyle is on stage near the end of the episode with Mr. Garrison, as he turns to walk off he teleports several feet.
Bradley Biggle Sightings
In every episode of Season 19, Bradley Biggle can be spotted in the background, much like the Visitors were in previous Seasons.
- In the scene after PC Principal is talking to Mr Garrison, the poster that in earlier seasons showed a picture of a visitor and the text "Have you seen me?" appears with the visitor replaced with Bradley Biggle.