As further proof, I've posted links to War Plan Red, the 1930 U.S. plan to invade Canada. According to the plan this would have entailed strategic bombing of cities (yeah I know, many Canadians would be happy to see Toronto leveled) and the use of chemical weapons. Here's a documentary I stumbled on that discusses this plan and the context in detail.
What I found even more startling was Defense Scheme No.1 a planned Canadian invasion of America. Now that's ballsy, lol.
Needless to say, like Operation Northwoods, both these plans sat on the shelves for years collecting dust.
Edited by redhen, 22 February 2013 - 05:53 PM.