Passports required at American/Canadian border

Touring American drum corps just received one more reason not to visit Canada and Canadian drum corps have another expense to their members:

U.S. will demand passports from Canadians - cbc.ca

U.S. to demand passports of all travellers [sic] - ctv.ca

O' Canada, New Homeland Security regs could impact - DCP Forums

On the other hand it might make the process of crossing the border a little more clear and consistent for drum corps. I remember when I marched that crossing the border was always a high-anxiety thing for corps staff as any "funny stuff" or confusion could cause the border guards to delay our trip for hours.