Oh, wow, really.

Officials can swear using any book or document meaningful to them – or none at all.

https://www.freedomforum.org/swear-bible-oath-of-office/

There’s also some actually used examples like a stack of banned books, Superman comic book, and even a Dr. Seuss book.

It seems like swearing on the Constitution should be mandatory.

Trump’s preferred book might have been too flagrant too soon

deleted by creator

The Cartoon History of the Universe it is.