Mary has not been afraid to speak out against her own family members.

Unafraid to ruffle feathers along the way, Mary has made several high-profile enemies since writing her book.

One of her most infamous feuds is between herself and another woman with a political family, Meghan McCain.

Mary Trump and Meghan McCain talking

The Trumps v.s.

the McCains is a feud that goes way back

Meghan McCain has never been afraid to initiate a fight.

It seems as though there were hard feelings all around.

Meghan McCain and John McCain smiling

Last year, McCain was bothered by Mary’s book.

McCain questioned, further accusing the author of cashing in on her family’s name.

It doesn’t seem they’ve worked this out.

Mary Trump speaking

Mary said, “I think she’s a coward.