The “evidence” is inherent in the declaration of renunciation that was required for Canadian naturalization at the time.
The “evidence” is inherent in the declaration of renunciation that was required for Canadian naturalization at the time.
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Evidence for what???
Can you link to the law at the time that required them to renounce US Citizenship? I’m not familiar with 1950s Canadian immigration law.
Also you’d still need to show on the US side that her citizenship was renounced. Just because Canada may say they require that doesn’t mean that she actually did it. That’s a Canadian issue not US to deal with.