*confused censorship noises*

Seems like it's a thing of the somewhat recent past, with some groups still asking for some books being banned locally at times. https://en.wikipedia.org/wiki/Book_censorship_in_the_United_States

Thanks. So being banned from one school would make it "banned". This meme makes it sound as though the book is not allowed in the US at all.

No no, the meme says "has been", as in, in the past, back when USSR was still a thing. During the Cold War, the book was indeed banned in the US entirely.