Aquaticism - S7-E14
Trivia: In the opening intro the store next to Bob's is called "Pro-pain Accessories" and the exterminator is "Dale's Dead-Bug." Hank Hill, from the show "King of the Hill", sells propane and propane accessories and his neighbor, Dale Gribble, owns Dale's Dead-Bug. Jim Dauterive, one of the show's creator/writer was also a writer/producer for "King of the Hill."
Chosen answer: It is subtly shown that Rice has a deal with the US government to conduct his business without conflict, something he won't have in Canada. There is also a strong theory that the people helping the children is Department H. The Canadian organization that started the super team, Alpha Flight.
MasterOfAll