No,no...I wasn't suggesting that Canada was going to have a draft,I just used that as an example of what can happen to "dual citizens".Being a dual citizen myself (US/Ireland) I've done some reading on the subject,including on some of the unexpected,unpleasant things that can happen.Our State Department,for example,warns dual citizens that one possible danger they might experience is,when entering the country of their other citizenship,they might be "drafted" into the army if that country has any kind of mandatory military service laws...as some still do.
On a side note...I recently developed a curiosity about a town in northern Vermont called Derby Line,which sits right on the Canadian border and which has a library that's literally *on* the border (Haskell Library..look it up...fascinating).I read that many people living in the town on the Canadian side are dual citizens because for many years the only nearby hospital was in/near Derby Line so many of the town's kids were born in the US.So,at least with the US and Canada dual citizenship isn't a particularly unusual situation.
There is a street in Derby Line (VT)/Rock Island, (QC) where the border runs down the middle of the street, so your neighbours across the street, are in another country.
After 9/11, apparently, neighbours on one side of this street were required to drive to Customs, up to a mile away, register, and then drive back to their neighbour’s house. While they were supposed to do thus before 9/11, I don’t believe that it was enforced; now it is, and apparently, vigourously. Borrowing a cup of sugar could become arduous, as well as an international incident!