Canada has a wealth of natural resources that we could restrict from selling. No
nickel, no steel. Chrysler, if you decide to make your cars elsewhere, same goes for you.
If that doesn't work:
1/cut off all tributaries to south flowing rivers, and divert to Canadian agriculture purposes irrigation etc. Or built more power dams to make use of the new bounty of water.
2/re-route hydro power from the manic watersheds, and give it to Canadians at cut rate instead of giving it now to the US at almost free rates.
3/sell nuclear technology to N Korea.
4/open up arms trade with Russia, lower Northern defense systems NORAD. (better the enemy you always knew than the one who likes to stab you in the back.)
5/ build up a arms industry in Canada. Put people back in the factories and make money so they can buy new japanese and european cars. We made the mistake of dropping the all Canadian made Avro Arrow for the sake of the US who reqtested we do so. Best up to date fighter of it's time, and the US knows it. We were the best at ship building too, we can go back to it.
6/ pull out of the clean air group and start our own manufacturing of cars.
Time for Canadians to realize they are a sleeping lion, so 'cmon folks send in
your complaints to your reps. Chrysler, see if you can make cars in the US without
natural resources. (Friends, you know why Chrysler is muscle flexing?, because all along even before the hypocratic Obama visit, the plan was to build more Chryslers in the US at the expense of Canadian jobs. As if it wasn't so obvious).