16 US Code 931 explicitly references this as Lake Ontario. A presidential executive order cannot override a Congressional statute.
Here is what Doug Ford had to say about it.
Ontario Premier Doug Ford unveils a Lake Ontario sign along the lake’s shoreline in response to Trump’s executive order to rename it Lake America.
Ontario Premier Doug Ford unveils a Lake Ontario sign along the lake's shoreline in response to Trump's executive order to rename it Lake America. pic.twitter.com/XTdpdIUkhu
— Molly Ploofkins (@Mollyploofkins) August 29, 2026