Thanks for the clarification, I avoid calling the CRA bc it takes such a long time to be able to reach anyone, but the webpage is clear I think lottery winning and sweepstakes are non-taxable income and do not need to be declared, no matter if the prize is won outside of Canada.
Whatever the USA gov retained is unlikely I will get back any of it, but it makes things easier for me and also means I do not have to pay for filing taxes with TurboTax.
