Hi Somchai!
The Canadian government has already indicated that they will 'manage' our dollar to ensure that it does not spike too high above the USD. This means they are quietly selling down our dollar to match the pace of decline with the USD. International currency traders are also part of the story and they will sell down or short the our dollar as they see the direction provided by our governement and also due to the close relationship our economy has with the US economy. Bad economic news for the US is perceived as bad news for Canada, hence the weakness in our dollar whenever a bad news item comes out from the US that causes the USD to plunge.
If I hear any hint that the Amero is going to become a reality, I have already decided to liquidate all my assets and leave the country for good. The stupidity of our government can never be overestimated and the idea of tying our financial freedom, not to mention our economic soverenty, to a nation that is in rapid decline, is pure lunacy. I would rather take my chances in another country than watch Canada spiral down to third world status. And if I was an American, I would be packing my bags right now, since it is clear that the current administration has no clue how to run the country and the financial devastation coming down the pipe from all of this money creation is going to strip away the wealth of that country in one generation.
cheers!
mike