Answer: Anthropologists, Archeologists, and Geologists
Uncle Sam--leader of the country or the symbol of the country-- and Lady Liberty-- symbol representing the freedoms and ideals of the country.
The whole country was under investigation and the cartoon suggests all people could be seen as a threat to the country. It also suggests the ideals of the country could even be a threat to the security of the country.
It was one of the first wars that showed the death and destruction war caused unlike the years before they had no pictures of the wars