Nine members of the Kennedy family filed a lawsuit to block the Trump administration from building its proposed 250-foot "Triumphal Arch" near Arlington National Cemetery, arguing in part that the monument would cast shadows over Kennedy family gravesites, including that of former President John F. Kennedy.

"This action is about protecting sacred spaces that belong to the American people," Rory Kennedy and Maxwell Kennedy said in a statement released on behalf of the family on Tuesday.

The family's lawsuit centers around their concerns that construction of the proposed arch -- which they note would be as tall as a 25-story office building -- would obstruct sight-lines of the family gravesite as well as "permanently cast a shadow over the graves of servicemen and women" in the cemetery.