In S10E13 of The Simpsons, "Homer to the Max", Homer and Marge attend a garden party. During which, Marge dances with then-president Bill Clinton. However, he is forced to excuse himself on what appears to be official business, giving the excuse:
Aw, shoot. Quebec's got the bomb.
That is, presumably, the Canadian province of Quebec has acquired nuclear weapons.
I've never got this.
Was there, at the time this episode was written (late 90s), some context or reference that can explain this? Why specifically Quebec, rather than Canada in general? Was there some political tiff between the US and Quebec?