[s7e15] It's Christmas In — Canada

Along the way, they encounter various Canadian characters who join their quest, each mirroring a character from The Wizard of Oz :

The story kicks off when biological parents arrive from Canada to claim him under a new Canadian law. Heartbroken, Kyle and the boys—Stan, Cartman, and Kenny—travel to Canada to petition the Prime Minister to change the law and bring Ike home. [S7E15] It's Christmas in Canada

The episode features a notable twist where the "Prime Minister of Canada" is revealed to be Saddam Hussein in disguise. This was a timely reference to the real-world capture of Saddam Hussein, which occurred just days before the episode aired. Along the way, they encounter various Canadian characters

The boys follow the "Only Road" in Canada (a parody of the Yellow Brick Road) to reach Ottawa. This was a timely reference to the real-world