Removing a book from the library is not a ban any more than a publisher rejecting a manuscript is a ban. Declining to provide a book is not the same as prohibi

Removing a book from the library is not a ban any more than a publisher rejecting a manuscript is a ban. Declining to provide a book is not the same as prohibiting the possession, use, or distribution of a book. As for “external parties”, schools in the US are public institutions.