I'd like to actually follow up with the discussion of the RESPs and RDSPs. These both include matching grants provided by the federal government. Of course, these grants are intended to help families save for post-secondary education or help disabled Canadians avoid poverty. They weren't intended to somehow make their way into the U.S. treasury.
How does the U.S. view these Canadian registered accounts? If a Canadian were to volunteer the information to the Americans or someone who is considered a U.S. person, a Canadian who's considered a U.S. person under FATCA, are they subject to federal U.S. taxes?