The USS Lewis B. Puller will now be able to conduct military operations under the laws of armed conflict.
Jack Posobiec, a right-wing activist who brought attention to debunked conspiracy theories, is a naval intelligence officer.
City leaders had vowed to remove the city's four Confederacy-linked monuments following the deadly violence in Virginia over the weekend.
Many white nationalists are rejoicing after President Trump reverted back to blaming "both sides" in the deadly Charlottesville protests over the weekend.
Authorities say a man threatened to rape the New York City Council speaker, kill her family and kill all the city's gay police officers.