When the cemetery official tried to prevent Trump campaign staff from entering Section 60, campaign staff verbally abused and pushed the official aside, according to the source.

"Federal law prohibits political campaign or election-related activities within Army National Military Cemeteries, to include photographers, content creators or any other persons attending for purposes, or in direct support of a partisan political candidate's campaign," according to the statement. "Arlington National Cemetery reinforced and widely shared this law and its prohibitions with all participants."