Okay, this is very simple, and I'm only asking because websites weren't very clear. . .
My little brother is a member of the Boy Scouts of America. Yay for him! Anyway, one of their scheduled trips will take him into Manitoba, Canada. Disregarding my innate jealousy as a in-the-process-for-getting-citizenship-Junior-Canadian, I know that passports are required for crossing between our borders. Sucks, but it's there.
According to my parents, his Scout Troop leaders gave a different impression, stating that this would not be required.
Now, my brother is far from responsible with his things. His ADHD certainly doesn't assist in that, as his attention spand is shorter than that of a gnat, and he is very prone to forget things (as is normal for children!), so there is obvious concern about spending somewhere in the $100 range on a passport, then losing it while in the particular destination.
My question is as thus : If a minor under the age of twelve is traveling via bus across the US - Canadian border with a Boy Scout Troop, are they required to travel with a full passport? Does this change if they travel by air? (I ask that because I'm uncertain what method they will be going.)