This is strange, a U.S. (or any) government clerk should not use official correspondence to disseminate personal views or propaganda.

What state was this, if I may ask?

I have a similar story, Sophie, came to the U.S. from Europe at a young age, not to immigrate but on account of my father’s work assignment. 14 years later I was sworn in as a citizen, after attending college and settling here.

I am white, express myself in English better than most native speakers, I am privileged, as you say. But even I was harassed by bigoted customs officials and ultrapatriots back when I was just a green card holder. So I entirely understand your desire for security afforded by citizenship.

(Again, pay no mind to trolls like Κβ χ, Tony ن, they hide behind aliases and pass judgment)‎