Mr. Hannah, I'm worried, because if nothing in your records says that these people in Quebec and New Brunswick are U.S. people, the U.S. will actually have that information, and you'll have to give it to them. If you're worried about the money that could be withheld, the 30% that we're talking about, think of the threat: they could actually be telling you to provide this information.
On May 14th, 2014. See this statement in context.