Anyone else think that it just doesn't make sense for the CSA to invade Canada. I mean they just fought a several years long civil war, that would have wrecked most of their country. Not to mention trying to both hold down and assimilate the various rival groups and the population's general war weariness.
Kaiserreich's Canada usually takes a very aggressive stance against Syndicalists, so them entering a war against them wouldn't necessarily be on them. In my last game as the CSA, they guaranteed the Pacific states, so I had to go through them to finish the reunification. It's also easy to get in a war with them when they declare on the 3rd internationale if you chose to join. They may even declare war on you directly themselves.