Originally Posted by FighterHayabusa

In my experience as a US and Canadian citizen, neither country cares about the other, as long as you have the right passport or birth certificate for the one you're living in. The only thing is the inconvenience of ALWAYS having to file a US tax return even if you don't live here

I think that officially Canada allows 3 and the US 2 (or the other way around) but I can't see how they'd find out or why it would matter if you decided to get a few more!

One thing I was curious about - let's say you work for Kelowna flightcraft in BC, Canada as a US/Canadian citizen and they want you to fly into Havana...