05/31/1945
https://www.presidency.ucsb.edu...
"It has been shown over and over again that the cost of the relatively small amount of materials and manpower needed for this project will be fully repaid in tolls and power receipts; and, in addition,..."
"The project is of great importance to our national security and our economic growth."
"The seaway will be self-liquidating through the collection of tolls."
"I wish to call to the attention of the Congress the immediate urgency of action on legislation to authorize the construction of the St. Lawrence seaway and power project."