I was a Canadian citizen, and moved to the US in 1995. I became a US citizen in 2005. I solely contributed to the RRSP while I was in Canada. I reported the RRSP on the FBAR annually. I withdrew some of the RRSP in 2021, and paid 25% Canadian Tax. How and where do I report the money withdrawn, on the 1040, and where do I report the tax paid?
