President Trump has signed an executive order renaming Lake Ontario to "Lake America."
Why it matters: The president is following through on his threat over the lake after U.S.-Canada trade negotiations collapsed.
- It is unclear whether Trump has the authority to rename a body of water shared between two nations, as he did last year when he signed a similar order renaming the Gulf of Mexico the "Gulf of America."
Go deeper: "Lake America": Trump turns Canada feud toward Lake Ontario
This is a breaking news story and will be updated.