US Navy wanted to control USA-South America shipping according to the U.S. Joint Intelligence Committee. Daily summary dated 6 January 1942

An item reported that the US Navy was planning to take control of all the United States shipping to and from harbours in South America.

Source

Map Room Papers (Roosevelt Administration), 1942 - 1945. U.S. Joint Intelligence Committee. Daily summary No. 27 dated 6 January 1942