Ebbie, Little Hawk, NicoleC and anyone else who has speculated on the threat posed to Canada by the US:

Some seven or eight years ago, the TV channel "Channel 4" in the UK, proposed in a documentary on the EEC, a situation in which a war could erupt between the US and the European Community, with Canada as the battlefield, in or about 2030. The events leading up to this were:

The world is short of oil;
The US has elected a ranting populist (I think they called him "Diaz") as President;
The EEC leaders are all corrupt oligarchs;
Vast amounts of oil are miraculously discovered on the continental shelf off Labrador and Quebec;
Quebec cannot agree with Ottawa over the division of the spoils (among other things) and breaks away from Canada;
The US twists Canada's arm to be allowed to extract the oil, and threatens Quebec with force if it too does not allow the US to grab all it wants;
The EEC twists Quebec's arm to be allowed to extract the oil, and threatens the US with force if it violates Quebec's sovereignty;
The US issues an ultimatum to get of Quebec, to the EEC;
At the last minute, the British EEC Commissioner resigns over some scandal involving graft and corruption, leaving the Commission inquorate, so it cannot reply to the US ultimatum;

Zap, pow, wallop!

How ridiculous or far-fetched any of the above premises are or might be, is entirely up to you. However, I think the documentary suffered somewhat from its own thread drift; it was only supposed to discuss the delegation of Health and Safety regulation from Parliament in Whitehall to the EEC Commission in Brussels as a result of Britain signing the Maastricht treaty.