What the governments do is have offshore bank accounts. I spent 15 years with three of the auditors general here in Ottawa, and the point is, in trying to take the budget information, it's just about impossible to see where that goes. Some of that can easily be leaked into an offshore account for a particular government purpose.
What I mentioned is not tax evasion so much as an allocation problem that leads to offshore accounts that may have acceptable purposes within Canadian ethics and so on.