Problem is that FATCA requires banks to actively send the US government personal information about its customers with US citizenship, while the GDPR forbids them from doing so without consent from their customers (https://americanexpatfinance.com/tax/item/632-eu-data-protec...)
But yes, accidental Americans definitely are a weird case. Some of them don’t even know they have US citizenship until the IRS sends them a message, or when, upon visiting the USA, border control requires them to show a US passport (https://en.wikipedia.org/wiki/Accidental_American#Awareness_...)
Problem is that FATCA requires banks to actively send the US government personal information about its customers with US citizenship, while the GDPR forbids them from doing so without consent from their customers (https://americanexpatfinance.com/tax/item/632-eu-data-protec...)
But yes, accidental Americans definitely are a weird case. Some of them don’t even know they have US citizenship until the IRS sends them a message, or when, upon visiting the USA, border control requires them to show a US passport (https://en.wikipedia.org/wiki/Accidental_American#Awareness_...)